Fiber VS Copper: How Should I Make a Decision?

Both fiber optic cables and copper wires are media of signal transmission, but the way of transmission may differ. Fiber optic technology uses pulses of light to carry data along strands of glass or plastic, while traditional copper wires transmit electrical currents. The obvious difference is the maximum cable length. Most people prefer fiber because of the longer max cable length of optical fibers. But what are other factors which might come to mind when making choice between them? You may find answer in this post.

Comparison Between Fiber Optic Cables and Copper Cables

The following properties make a comparison between fiber optic cable and conventional copper cables.

1) Bandwidth

Fiber optic cable provides more bandwidth than copper and has standardized performance up to 10 Gbps and beyond, something that it is impossible to achieve when using copper. More bandwidth means that fiber can carry more information with far greater efficiency than copper wire.


2) Range of transmission

Since data travels in the form of light (in total internal reflections, the loss of quality is negligible) in fiber optic cables, very little signal loss occurs during transmission and data can move at higher speeds and greater distances.

3) Not susceptible to interference

Fiber optic cable is also much less susceptible to noise andelectromagnetic interference than copper wire. For example, over a distance of two kilometers, copper wire would experience a great deal of degradation in quality, while there would be virtually none over the same distance using optical cable. It is so efficient, in fact, that roughly 99.7% of the signal reaches the router in most cases.

4) Size, weight & strength

Fiber optic cable is much thinner and lighter than copper cable. It can be used more efficiently in confined underground pipes, and is also much stronger, with eight times the pulling tension of copper wire. Furthermore, it has strength members and stiffeners that make it much harder to damage or kink.

Fiber optic cables vs Copper cables-

When to Choose Fiber or Copper?

Apart form all the factors above, one important factor while choosing the cable is the speed of the network and the devices you plan to use. The general specifications for currently available ethernet network speeds are as follows:

copper cable

fiber optic cables-

I’d pick a cable that will support the current network requirement, while having sufficient scope for expansion. It is important to choose a medium that will support enough growth because usually replacing switches or modules on both ends of a link is just a one/two man job, while running new cabling for an upgrade is highly labor intensive and might cost a lot of money in comparison. The following are suggested scenarios where I’d pick each cable.

1.Cat6 would be my choice for last mile connectivity to the desk/wall outlet for any organization that either has:

  • A very low bandwidth requirement, like small cafes, retail stores, etc.
  • Or where the expected life of the interior fitout and office space is less than 5 years.
  • It might be worth noting that Cat5e might seem cheaper, but it only covers a small margin. So I’d just skip that for the better performance.

2.Cat 6a will be my choice for both last mile connectivity for the following reasons.

  • Ability to run at 10G speeds later on
  • Less susceptible to noise, interference and cross talk compared to Cat6. (Since almost all Cat6a cables are shielded)
  • Cat6a would be my choice for the last mile haul in any industrial or factory environment if they cannot use fiber all the way to their equipment.

3.Single mode fiber would be my cable of choice for any kind of backbone cabling where the long haul is needed. It has stood the test of time and I don’t think it’ll get obsolete any time soon. I’d pick the OS1 grade for indoor applications and OS2 grade for outdoor applications.

4.I’d use multimode fiber in between my telecom rooms, between racks in the data center. I’d pick OM3/OM4 depending on the budget available.

5. If possible to convince decision-makers, I’d use a combination of SMF and MMF across the entire network, even to the desk or wall outlet. Going for a completely fiber only networks saves up a lot of space and energy costs and provides a lot of management flexibility by drastically reducing the number of telecommunication rooms in large facility. Also such a network will have a large capacity of bandwidth and provided you’ve run enough number of cores, it will be future proof to a large extent.


There is no such thing as the perfect cable for everything. In the end you need to balance out between cost, capabilities and provision for growth based on the requirements of your particular application and business. But no matter copper cables or fiber optic cables, all can be found at FS.COM. You can always find one catering to your need most.

Active DAC vs. Passive DAC(Direct Attach Cable)

As one kind of optical transceiver assembly, a direct attach cable (DAC) is used to connect one mobility access switch with another when forming a stack, which can be either passive or active. Since the passive DAC cable contains no active components, it provides a direct electrical connection between corresponding cable ends. This process can also be done by an active DAC cable that is considered active because there are optics and/or electronics embedded within the connectors. To put it simply. Active DAC vs. passive DAC: An Active DAC contains electronics for signal conditioning. While A Passive DAC does not contain electronics for signal conditioning. Then Why choose one implementation over the other? Just keep reading!


Active vs. Passive DAC

If a DAC contains the signal conditioning circuitry, it is an “Active DAC”. If the DAC does not contain this circuitry, it is a “Passive DAC”. For a passive DAC to work, the host networking equipment must support the signal processing functions. When an SFP+ is inserted, networking gear compatible with passive DAC reads the module type, and the signal conditioning is activated only when a passive DAC is detected. In all other cases, standard “machine level” signals are sent across the SFP+ edge connector.

More than 80% of all SFP+ equipped switches on the market today support passive DACs. The remaining less than 20% perform no signal conditioning and, therefore, must be equipped with substantially more expensive Active DAC if copper interconnection is desired. However, these switches, since they do not contain the signal conditioning on each SFP+ port, are considerably less expensive.

Active vs. Passive DAC: Which to Choose

The decision regarding which way to go, a switch supporting Passive DAC or one requiring Active DACs, depends on several factors including:

Fiber Connectivity—If the application of a given switch is expected to utilize primarily/exclusively fiber SFP+ transceivers, the added cost of a switch that supports Passive DAC may not be warranted. On the other hand, if SFP+ ports are expected to be equipped primarily with DAC, the higher cost of the switch will be quickly recovered by the savings using low-cost Passive DAC versus higher priced Active DAC.

Length of DAC Spans—If the primary application of the use of DAC is limited to about 7 meters or less (e.g. within a rack or between adjacent racks), a solution supporting Passive DAC is indicated. However, if most of the DACs deployed with the switch are greater than 7 meters in length (e.g., ToR to EoR), Active DAC would be required regardless of the switch, so a low-priced Active-DAC-only switch may be the right choice. In fact, if a switch supporting signal conditioning detects an active DAC inserted, it will not use its internal signal conditioning circuitry but will leave that function to the active DAC itself.

FS.COM 10G DAC Solutions

FS.COM provides a full range of DACs, both passive and active, for all major and many minor brands of switches. The following is a sample of the popular 10G DACs offered by FS.COM:

Part Number Brand Active/Passive
SFP-H10GB-CU1M Cisco Passive
SFP-H10GB-ACU5M Cisco Active
Force10 CBL-10GSFP-DAC-2M Dell Passive
EX-SFP-10GE-DAC-10MA Juniper Active
CAB-SFP-SFP-1.5M Arista Passive
10G-SFPP-TWX-0701 Brocade Active
JD096C HPE Passive


Besides the 10G DACs mentioned above, FS.COM offers a variety of high speed interconnect DAC assemblies including 10G SFP+ Cables, 40G QSFP+ Cables, and 120G CXP Cables to satisfy the demands from 10G to 100G interconnection. All of the FS.COM direct attach cables can meet the ever growing need to cost-effectively deliver more bandwidth, and can be customized to meet different requirements. For more information, please visit or contact over e-mail

Introduction to HP ProCurve Mini-GBICs and SFPs

About HP ProCurve

HP ProCurve was the name of the networking division of Hewlett-Packard from 1998 to 2010 and associated with the products that it sold. The name of the division was changed to HP Networking (also called HP ProCurve Networking) in September 2010 after HP bought 3Com Corporation. As the then-ProCurve division began to offer LAN switches, Core, Datacenter, Distribution, Edge, Web managed and Unmanaged Switches. The ProCurve was also used with Network Management, Routing and Security products. HP ProCurve transceivers as the part of its networking accessories that are applied to their corresponding switches or routers. Today, we will introduce some knowledge of the HP ProCurve Mini-GBICs and SFPs.

FS.COM Optical Transceiver Solutions for HP ProCurve
ProCurve Gigabit-SX-LC Mini-GBIC (Product No. J4858A/J4858B/J4858C)

A small form-factor pluggable (SFP) Gigabit SX transceiver with 1LC port that provides a full-duplex Gigabit solution up to 550 m on multimode fiber.

HPE J4858A Compatible 1000BASE-SX SFP

FS.COM Solution:

  • NEW HP J4858A X121 Compatible 1000BASE-SX SFP 850nm 550m Transceiver Module
  • NEW HP J4858B X121 Compatible 1000BASE-SX SFP 850nm 550m Transceiver Module
  • NEW HP J4858C X121 Compatible 1000BASE-SX SFP 850nm 550m Transceiver Module
ProCurve Gigabit-LX-LC Mini-GBIC (Product No. J4859A/J4859B/J4859C)

An SFP format gigabit transceiver with LC connectors using LX technology.

HPE J4859A Compatible 1000BASE-LX SFP

FS.COM Solution:

  • NEW HP J4859A Compatible 1000BASE-LX SFP 1310nm 10km Transceiver Module
  • NEW HP J4859B Compatible 1000BASE-LX SFP 1310nm 10km Transceiver Module
  • NEW HP J4859C Compatible 1000BASE-LX SFP 1310nm 10km Transceiver Module
Things You Should Know About HP ProCurve Mini-GBICs and SFPs

For the above products, there usually are many questions about them. The following information will let you know more about them.

Supported Platform

According to HP ProCurve Networking Mini-GBIC Support Matrix, we can easily find out which Mini-GBICs and SFPs are supported on which ProCurve Systems. General rules are:

  • Please use only genuine or high-quality 100% compatible ProCurve Mini-GBICs and SFPs on ProCurve System.
  • Newer ProCurve products require revision “B” or later Mini-GBICs and SFPs (product number ends with the letter “B” or later, for example J4858B, J4859C).


About the Version A, B, C

HP ProCurve Mini-GBICs and SFPs have three versions, but you may not find A and B anymore in HP’s official website. In fact, the version A, B and C are the development of HP ProCurve Mini-GBIC and SFP. Though there is no big difference between these three versions, some improvement will be added in the newest version, and the supported platforms adjustment. The “revision C” Mini-GBICs (eg. J4858C, J4859C, J4860C) are supported in all ProCurve products that support Mini-GBICs. In addition, “revision B” and “revision C” mini-GBICs can be used together in any ProCurve switch that supports mini-GBICs. Actually, as the transitional products, HP stops offering the version A and version B. But version C are not supported on some old switches, thus, some users have still used the version A or version B. FS.COM can support the 100% compatible HP ProCurve Mini-GBICs and SFPs at version A, B and C, such as J4858A/B/C, J4859A/B/C, J4860A/B/C.

Mini-GBICs and SFPs hot-swappable

All ProCurve Mini-GBICs and SFPs are hot-swappable (they can be installed and removed while the switch is powered on). However, the network cable should be disconnected before removing the Mini-GBIC or SFP from the switch.

Best practice tip: After inserting a transceiver into a ProCurve switch, the Mode LED will come on for two seconds while the transceiver is initialized. Do not remove the transceiver until the Mode LED has turned off. For the Switch 2600 and 2800 Series: After inserting a transceiver into a 2600 or 2800 switch, the “M” LED will come on to indicate that the mini-GBIC slot is active. Wait at least two seconds after the “M” LED comes on if you need to remove the transceiver.

About FS.COM

FS.COM is a professional manufacturer and supplier of optical networking solutions. We can supply 100% compatible fiber optic transceiver modules of many brands, like HP, Cisco, Dell, D-link etc. with an incredible discount. About HP, you can find a full product line of HP transceivers with a good price and enjoy same-day shipping. In addition, according to your requirements, we welcome any inquiry for customized fiber optic transceiver. FS.COM’s aim is offering the best quality products and perfect solutions, saving customers’ time and money.

Recommendations on Different Devices to Extend Network

With the advancement of technology and desires for more information access, the world is constructing a network web where everyone can get access to it as long as there is wireless network. I guess nowadays almost everyone has a router in households to get access to the internet. But sometimes you may get frustrated by the small wireless coverage. Because routers can only do so much. Even if you have the fastest and most expensive router at home, there are situations wherein you will need to increase your local network’s coverage such as: to accommodate more devices to connect to the network and to extend the wireless network range. In this post, some types of devices will be recommended to extend your network range for your reference.


A switch is a device that enables you to connect computers and other devices to a computer network through the use of an Ethernet cable. The switch is not capable of sharing Internet connection across the network. However, it allows more wired devices to be connected to the local network. You may share Internet connection by connecting a switch to a router.

S3800-48T4S High Performance Metro Ethernet Switch


S3800-48T4S high performance Metro Ethernet switch is designed to meet the demand of cost-effective Gigabit access or aggregation for enterprise networks and operators customers. It adopts high performance and low power processor to provide full speed forwarding and line-dormant capacity.

S3800-48T4S supports multiple configuration modes to make it easy for network management and maintenance. It offers flexible port combination form to facilitate user operations so that you can directly connect to a high-performance storage server or deploy a long-distance uplink to another switch. The switch comes with a one-year limited warranty, including any quality problems during the free maintenance.

Wireless Access Point(WAP or AP)

A wireless access point (WAP) is a device that adds wireless capability to your existing wired network. This is very helpful especially if you already have an existing local network that doesn’t have wireless capability or running in Wireless-B or Wireless-G speeds. By using a WAP, you can grow your network by adding computers, printers and other wireless devices without stringing cables. It can even upgrade the older wireless networks to Wireless-N performance for your optimum Wi-Fi experience.



AP-S300 is a versatile wireless solution offering single band operation and fast Ethernet for high performance networking. Featuring integrated power over Ethernet (PoE), it offers easy installation and placement, even on high ceilings, drop ceilings, walls and other locations where power may not be available. Our AP software is based on the OpenWRT program and updated through U -BOOT technology. When a new version comes out, you can refresh the firmware on the original basis. The AP doesn’t support multiple VLANs but you can use AC to configurate one VLAN.

Range Extender

A wireless range extender repeats and extends the wireless signal coming from your access point or wireless router. It increases the distance over which a wireless signal can spread and thus, enhancing overall network signal quality. The range extender can connect wirelessly to a router or an access point. However, it should be configured to have the same wireless settings with the source of your wireless connection for it to work.

Linksys RE6500


The Linksys RE6500 is the latest range extender from Linksys with 802.11ac technology. It lets you repeat the wireless signal of any access point or router to provide Internet connectivity in hard to reach areas through a wireless connection on either the 2.4 GHz or 5 GHz frequency band.

Wireless Bridge

A wireless bridge is a device that allows any wired device to be part of the wireless network. It converts wired Ethernet devices such as HDTVs, Blu-ray players, DVRs, game consoles and etc. for use on a local wireless network.

Linksys WUMC710

Linksys WUMC710

The Linksys WUMC710 is a single band Wireless-AC Wi-Fi 5GHz Universal Media Connector Bridge with 4-Port Switch capable of connecting Ethernet devices to a wireless network. This media connector has Wireless-AC technology which is compatible with Wireless-N (5 GHz) and wireless-A routers or access points.


Four different devices have been recommended to extend your network range. Hope it will be helpful to you. If you have any question about your network deployment, feel free to contact us via we have professional tech support team standby at your services.

Wireless AP vs. Router: Make the Right Choice

Wireless access points (WAP or AP) and routers are often thought of as the same thing. In fact, a wireless access point is similar to a router but there are some differences. Technically, any router with Wi-Fi onboard can be called a wireless access point, but that’s not their only definition. For example, a router can be an access point, but an access point can’t be a router. This post will cover both wireless AP and router, explaining each of their roles and advanced features. Then you can decide which one is best suited for your wireless network.


What Is A Wireless Access Point(AP)?

An access point is a networking hardware appliance that can be used as either an independent device or a component of a router. A WAP performs two major functions in a network. First, it enables devices that don’t have inbuilt Wi-Fi connection to access a wireless network. Once you connect a WAP to a router (that don’t have an inbuilt WI-FI ability) with an Ethernet cable, it becomes a wireless device which will connect to your network. Secondly, WAP is used as a wireless range extender, increasing the coverage of your existing WI-FI network. If you connect your router to a wireless access point through an Ethernet cable, you will be able to increase the area of your Wi-Fi access.

What Is A Router?

A router acts as a gateway in a computer network by connecting various devices wirelessly. A wireless router is a basic router with an added feature on an inbuilt access point. It allows a wireless communication and sharing of data amongst devices and computers that are connected to a particular network. The wireless router achieves this by allocating IP addresses to the computers and devices. Additionally, a router helps these computers that are within the wireless network to share devices such as scanners and printers wirelessly.

Wireless AP vs. Router: What’s the Difference?

Almost anyone who has an internet connection has a router nowadays. So I guess everyone is quite familiar with it. The commonly used router usually has antennas ranging from 1 to 4. And it has four more wired network ports compare to a wireless AP, except one WAN port for connecting upper network equipment, and the rest four LAN ports for connecting a computer with a wired network card in an intranet. Additionally, it has more indicators than wireless AP.


A simple wireless access point usually has a wired RJ45 network port, power interface, configuration port (USB port or through the web interface configuration) and several status indicators. Apart from the common configuration, a wireless access point can be designed into different types:

Ceiling-mount Wireless AP

Wall-mount Wireless AP

Outdoor Wireless AP


A wireless AP is widely used in large enterprises, because large companies need a large number of wireless access node to achieve a large network coverage. And all access terminal belong to the same network, which is convenient for the company network administrator to realize network control and management.

A wireless router is generally used in homes and SOHO environments where the coverage is narrow and users account for a small part. Under such kind of circumstances, only one wireless AP is enough.

Connection Mode

A wireless AP can’t be connected to ADSLMODE, unless a switch or hub or router is used as a medium. While the wireless router is endowed with broadband dial-up function, you can directly connect to the ADSLMODEM and achieve dial-up Internet access.


The function of wireless AP is to convert a wired network into a wireless network. To put it simply, wireless AP serves as a bridge between wireless networks and wired networks. Its signal range is spherical, so it is better to be placed in a higher point, which can increase network coverage. Wireless AP is a wireless switch, which is connected to a wired switch or router, and the wireless terminal and the original network belong to the same subnet.

A wireless router is a wireless AP with routing function, which is connected to ADSL broadband lines. Through the router function, an independent wireless home networking is built.

Wireless AP vs. Router: Which One should I Buy?

Typically, wireless routers are used in residential and small businesses, where all users can be supported by one combined AP and router. Wireless APs are used in larger businesses and venues, where many APs are required to provide service, for example, to cover a bigger area or to support thousands of users. In larger WLANs, it usually makes sense to have several APs feeding into a single, separate router.


In conclusion, if you want to build more reliable wireless network, you may need a wireless access point. If you just want a wireless network at home to cover only several people, the wireless router is enough. If you are looking for a good wireless AP supplier, FS. COM is a good choice. FS.COM provides several wireless access points with high performance to support resilient wireless access services for use in enterprise offices, schools, hospitals, hotels and more.

What Kind of Switches and Patch Cables Should I Choose for SFP Transceiver?

Gigabit Ethernet has supplanted Fast Ethernet in wired local networks and becomes ubiquitous throughout the world, serving as one of the most prevalent enterprise communication standard. The Gigabit Ethernet standard supports a maximum data rate of 1 gigabit per second (Gbps)(1000 Mbps), 10 times faster than Fast Ethernet, yet is compatible with existing Ethernet. To link your switches and routers to a Gigabit Ethernet network, you need a Gigabit Ethernet transceiver as a transmission medium. This article intends to introduce the most commonly used one—SFP transceivers.


What Is SFP Transceiver?

SFP, short for small form-factor pluggable is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications. SFP transceiver can be regarded as the upgrade version of GBIC module. Unlike GBIC with SC fiber optic interface, SFP module is with LC interface and the main body size of SFP is only about half of GBIC so that it can save more space. SFP interfaces a network device mother board (for a router, switch, media converter or similar devices) to a fiber optic or copper networking cable. It is designed to support SONET, Gigabit Ethernet, Fibre Channel, and other communications standards.

Types & Applications of SFP transceivers

SFP transceivers are available with various transmitter and receiver types, which facilitates users to select the appropriate optical transceiver for different optical reach and optical fiber type (single-mode fiber or multimode fiber) required by different link. SFP transceiver modules can be divided into several different categories:

Types Transmission Medium Wavelength Distance
1000BASE-T SFP Twisted-pair cabling / 100 m
1000BASE-SX SFP Multimode fiber 770-860 nm OM1-275 m/OM2-550 m
1000BASE-LX/LH SFP SMF & MMF 1270-1355 nm MMF-550 m/SMF-5 km
1000BASE-ZX SFP Single mode fiber 1550 nm 70 km
1000BASE-EX SFP Single mode fiber 1310 nm 40 km
1000BASE-BX10 SFP Single mode fiber 1480-1500 nm downstream, 1260-1,360 nm upstream 10 km
CWDM and DWDM SFP Single optical fiber various wavelengths various maximum distances

SFP transceivers are found in Ethernet switches, routers, firewalls and network interface cards. Storage interface cards, also called HBAs or Fibre Channel storage switches, also make use of these modules. Because of their low cost, low profile, and ability to provide a connection to different types of optical fiber, SFP transceiver provides such equipment with enhanced flexibility.

FS.COM Compatible SFP Transceivers for Popular Switches

FS.COM offers a full range of SFP transceivers compatible with major brands, such as Cisco, Juniper, Arista, Brocade, HPE, etc. All of these cost-effective compatible SFPs have been strictly tested to make sure 100% compatibility. The table below listed a small part of compatible SFPs supported on major branded switches.

Brand Switch Series Model Port Description
Cisco Catalyst 6500 Series WS-SUP720-3BXL 2 SFP Port
VS-S720-10G-3C 4 SFP Port
WS-X6724-SFP 24 SFP Port
Nexus 9000 Series N9K-C9396PX 48 SFP Port
IE3010 Series IE-3010-24TC 2 SFP Port
ASR 9000 Series Router A9K-MPA-20X1GE 20 SFP Port
Juniper EX 4200 Series EX4200-24T 2 SFP Port
EX4200-48T 4 SFP Port
EX4200-24T-DC 2 SFP Port
MX480 Router MX480 Router 4 SFP Port
SRX Series SRX210 1 SFP Port (Option)
QFX 5100 QFX5100-48S 48 SFP Port
Arista 7500 Series DCS-7504 48 SFP Port (Option)
DCS-7508 48 SFP Port (Option)
7050SX Series 7050SX-64 48 SFP Port
7100 Series DCS-7124S 24 SFP Port
Brocade VDX 6720 BR-VDX6720-16-R 16 SFP Port
BR-VDX6720-24-F 24 SFP Port
BR-VDX6720-40-F 40 SFP Port
SX Series SX-424F 24 SFP Port
SX-FI12GM-4-PREM 12 SFP Port
Brocade BI-RX-8 NI-MLX-1Gx20-SFP 20 SFP Port
HPE ProCurve 5400zl Series J8697A 2 SFP Port
J9548A 144 SFP Port
FlexFabric 5800 Series JC101B 4 SFP Port
JG225B 6 SFP Port
5400R zl2 Series J9584A 24 SFP Port
StorageWorks edge 2/12 348406-B21 12 SFP Port

FS.COM Patch Cables for SFP Transceivers

FS.COM offers comprehensive fiber patch cables for common and special types of SFPs, including singlemode & multimode, simplex & duplex, UPC & APC, lengths from 1 meter to 30 meters in large stocks. We also provides Cat 5e patch cables for 10/100/1000BASE-T SFPs.

Fiber Mode Connector Jacket
9/125 SMF LC Simplex PVC/LSZH
9/125 SMF SC Simplex PVC/LSZH
50/125 OM2 LC Duplex PVC/LSZH
62.5/125 OM1 LC Duplex PVC
Cat5e Patch Cables Max Distance Data Rate
Unshielded (UTP) 100m 1000Mbps
Shielded (FTP) 100m 1000Mbps


This article offers switch and fiber patch cabling solution for SFP transceivers. Besides the major brands mentioned above, we also provide SFP transceivers compatible with other brands, such as Dell, Extreme, H3C, Huawei, Intel, IBM, Netgear, Ciena, D-Link, Avago, and so on. As to special requirements, please contact for suggestion.

Proper Cabling Solutions for PoE Network

Ethernet cables

By running power and data transmission over a single Ethernet cable, PoE (Power over Ethernet) has found success across a variety of applications such as IP surveillance cameras, IP phones and wireless access points. However, without the right cabling and network design in place, PoE can encounter cable heating and connectivity issues that may adversely affect performance. So in this post, some cabling recommendations for PoE will be listed for your reference.

working principle of PoE switch

Issues Affect PoE Performance

Heat generation in cable bundles is one of the biggest issues that affect PoE performance. When power is added to balanced twisted-pair cabling, the copper conductors generate heat and temperatures rise. High temperatures will lead to higher insertion loss, and in turn shorter permissible cable lengths. It can also increase bit error rates, and create higher power costs due to more power dissipated in the cabling.

Cabling Recommendations for PoE

Some cabling recommendations for PoE are suggested to help lower cabling temperature.

Use Higher Category Cabling

Higher category-rated cable typically means larger gauge sizes, and as power currents increase, these larger conductors will perform better than smaller cable. Generally, higher category cabling will be necessary to minimize temperature increases while supporting PDs that require more power.

Reduce the Number of Cables per Bundle

If cables are bundled or closely grouped with other cables, cables near the center of the bundle have difficulty radiating heat out into the environment. Therefore, the cables in the middle of the bundle heat up more than those toward the outer layers of the bundle. Separating large cable bundles into smaller bundles or avoiding tight bundles will reduce temperature rise.

Design Pathways to Support Airflow

Enclosed conduit can contribute to heat issues. When possible, using ventilated cable trays would get better airflow. Open mesh cable trays and ladder racks will improve heat dissipation and create more opportunities for loosely grouping cables instead of tight bundling.

Cat 5e vs. Cat 6a: Which Is Better for PoE Cabling?

The type of cabling selected can make a big difference in terms of how heat inside the cable is managed, and how it impacts performance. Typically, Cat 5e and Cat 6a cable can be used to support PoE devices. But it’s better to use Cat 6a for PoE cabling.

With larger-gauge diameter, Cat 6a can reduce resistance and keep power waste to a minimum as it has a lower temperature increase compared to smaller-gauge Cat 5e. This better performance will provide additional flexibility, including larger bundle sizes, closed installation conditions and higher ambient temperatures. For instance, when comparing 23-gauge and 24-gauge cabling, there is a large variance in how power is handled. As much as 20% of the power through the cable can get “lost” in a 24-gauge Cat 5e cable, leading to inefficiency. In addition, less power is dissipated in a 23-gauge Cat 6a cable, which means that more of the power being transferred through the cable is actually being used, improving energy efficiency and lowering operating costs.

FS PoE Switches & Ethernet Cables Solution

FS offers fully managed PoE Gigabit switches, which delivers robust performance and intelligent switching for growing networks. Available with 8, 24, or 48 PoE Gigabit Ethernet ports, the model details of our PoE switches are listed below. Among them, the PS130-8 and PS400-24 are PoE switches, while PS650-48, PS250-8 and PS650-24 are PoE+ switches. Reliable & economical, our PoE switches are ideal for SME networks and can expand your network much more easily than ever.

FS PoE switches specification

Besides PoE, we also have various types of Ethernet cables including Cat 6a, Cat 6, Cat 5e and Cat 7 Ethernet patch cables. Most of them are in large stock and multiple cable colors are available. For more details, please visit

IP67 Waterproof Fiber Optic Patch Cable– A Survival In Harsh Environment

IP67 waterproof fiber optic patch cable can be used in harsh environment, providing more convenience and extra protection for network systems. Even if there are various patch cables available on the market, which can be used in different applications, in most cases, they can only be installed in relatively protected environment where stay away from liquid, chemicals and animal biting. What if I want to use it in military network or extremely harsh environment? The following text will introduce a saviour in hostile surroundings—IP67 waterproof fiber optic patch cable.

Overview of IP67 Waterproof Fiber Optic Patch Cable

Waterproof fiber optic patch cable is mainly used in outdoor connection. It is designed with a stainless steel strengthened waterproof unit and armored outdoor PU jacketed cables. It can resist high temperature, and is suitable for use in harsh environments. Similar to standard fiber optic patch cables, waterproof fiber cables also have various types, including simplex, duplex, 12 fibers, 24 fibers, and various kinds of connect interfaces are optional, such as LC, SC, FC, ST, MPO, etc.

IP67 waterproof fiber cable meets ODVA (Open DeviceNet Vendors Association) standards and the IP66/67 environmental sealing ratings. IP67 waterproof fiber jumper connectors are designed according to the IEC60603-7 interface standard, which allows mating to other similar mechanical locking systems. In all, IP67 waterproof fiber optic patch cable is a low-cost and ideal alternative for industry, FTTA, or other harsh environmental conditions.

IP67 Waterproof Fiber Optic Patch Cable–What Does IP Mean?

Here IP is referred to as Ingress Protection rating (or International Protection code), which is an important parameter showing the degrees of protection from solid objects and liquids. IP rating code is usually followed by two digits. The first digit indicates degree of protection against solids, which is raging from 0 to 6. The second digit represents degree of protection against liquids, which is raging from 0 to 8. The larger the number is, the higher the protection level is. The following two tables explain the two types of protection levels in details.

Table 1: Protection levels against solid objects.

Protection levels against solid objects

Table 2: Protection levels against liquids.

Protection levels against liquids

Why & Where to Use IP67 Waterproof Fiber Optic Patch Cable?

Compared to common fiber optic cables, IP67 waterproof fiber cables are endowed with the following features:

  • Corrosion-resistant, waterproof, dust-proof
  • High temperature stability, low insertion loss
  • Easy operation, reliable and cost-effective installation
  • Thread locking mechanism to ensure long-term reliable connection
  • Long-lasting and durable
  • Rugged design for extreme environments
  • High sealing performances for vacuum & under water applications

All of the above features make waterproof fiber cables suitable for outdoor application, such as:

  • Emergency repair quick connection system
  • Radio and television industry
  • Military exercise communication devices
  • Power industry emergency communication system
  • Oilfield, mining communication connection
  • Remote wireless base station
  • Railway signal control application
  • Intelligent substation communication
  • Video monitoring system
FS.COM IP67 Waterproof Fiber Optic Cable Component Details

Since IP67 waterproof fiber optic patch cables have various connectors and types. IP67 LC to IP67 LC duplex single mode waterproof fiber optic patch cable from FS.COM will be taken as an example for your reference.

IP67 LC Component Details

In FS.COM, IP67LC cable connector is the LC connector whose optical channels are based on the convention with duplex, single mode APC. The aluminum frame has a spring-loaded push-pull locking mechanism and possesses the excellent cable retention because of an aramid yarn within the cable. When there is no connection by the automatically operated sealing-cover, both chassis and connector can protect against dirt and dust. In addition to the automatic sealing shutters, rubber outer sheath and steel, the automatic protective cap is fitted for using when unconnected. When connected or capped, the sealing connection environment amounts to IP67.


With the rapid development of optical communication, more and more fiber optic cables are increasingly used in different environments. Under harsh conditions, the ruggedness and durability of common fiber optic cables cannot meet operators’ requirements, especially for exceptional demanding applications. This post mainly introduces IP67 waterproof fiber optic cable suitable in harsh environment. All the types of waterproof fiber optic cables are available in FS.COM. If you have any problem about them, please contact us via

The Need for Ultra Low Loss Fiber Patch Cables in Data Center

Fiber optic cables are now indispensable transmission media in data center. But during the transmission, attenuation of optical fibers becomes one of the top concerns since it greatly impacts the signal transmission, and what’s worse, it’s difficult to avoid, especially in the long distance transmission of high-speed backbone network. Under such a background, the introduction of ultra low loss fiber patch cables provides a new way to solve this problem. This post will reveal why ultra low loss fiber patch cable is superior and different types of ultra low loss fiber patch cables provided by FS.COM.

Why Ultra Low Loss Fiber Patch Cable is Advantageous?

Lower Attenuation—According to the loss of optical fiber, the optical fiber is divided into common fiber, low loss fiber and ultra low loss fiber. Among them, the attenuation of common optical fiber is about 0.20dB/km, and the attenuation of low loss fiber and ultra low loss fiber is lower than 0.185dB/km and 0.170dB/km respectively. Compared with common fiber, low loss fiber and ultra low loss fiber can respectively reduce cross section loss of 2dB and 3dB. For the future transmission rate of 400G, low loss optical fiber can reduce about 20% of regeneration stations, while ultra low loss optical fiber about 40%. The benefits and advantages of ultra low loss fiber cable are obvious and noticeable.

Network Redundancy—Compared with common fiber, the excellent characteristics of ultra low loss fiber provides network redundancy for expansion of network transition span and site, for upgrading to the faster bit rate and an increase of network components’ flexibility or extension of the distance between regenerators in order to achieve longer and wider regional network and satisfy the global increasing demand for bandwidth capacity.

Low Cost—In addition to aforementioned advantages, the use of ultra low loss fiber cable can greatly reduce cost. The reduction of a regeneration station means saving millions of dollars. With the forthcoming of 400G, compared to common fiber, low loss fiber can reduce 20% (about 0.3 billion dollars) of 400G regeneration station, while ultra low loss fiber cable about 40%.

Types of Ultra Low Loss Fiber Patch Cable

In order to offer better performance for our customers, FS.COM introduced two types of ultra low loss fiber optic patch cables.

Ultra Low Loss Single Mode Fiber Patch Cable

FS ultra low loss single mode fiber (SMF)features a typical insertion loss of 0.12dB. The cable is designed for signal transmission over the 1310nm and 1550nm wavelength. And it has Grade B connector which can ensure ultra low IL (insertion loss) and RL (return loss) and avoid the production of error code and worse signal. In addition, the material of the single mode fiber is G.657.A1 (Compatible with G.652.D)which allows the cable to be bent more severely than standard patch cables.

Enhance Grade-B LC Data Center Premium Patch Cable

Ultra Low Loss Multimode Fiber Patch Cable

Multimode fiber (MMF) is a cost-effective solution for short-reach optical interconnects of up to a few hundred meters. The low insertion loss MMF from FS.COM ensures ultra low maximum loss of 0.15dB at the wavelengths of 850nm or 1300nm. The common types of low insertion loss MMF include OM2, OM3 and OM4. With special material design, it also offers excellent hydrogen aging characteristics, which guarantee stability of fiber application. All in all, this ultra low insertion loss MMF cable fully meets the demands for transmitting signals with high speed and high capacity.

Enhance LC Data Center Premium Patch Cable


Since attenuation is a key factor impacting signal transmission, it’s crucial to select ultra low loss fiber patch cables to deploy future proof cabling infrastructure. If you are in need of any suggestions on network deployment, feel free to contact us via or directly visit

Bend Insensitive Fiber–A Perfect Solution For FTTH

It’s known that almost all fiber optic cables have one common weakness when deploying FTTH (Fiber to the Home): attenuation. Any accidentally twisting or bending of cable too much will generate attenuation that can ruin your application with signal loss. If the damage is severe, the user is usually faced with an option: either dump it or buy a new one. In order to solve the problem, bend insensitive fiber is designed to cause much lower optical power loss under bend conditions. In this way, cable bending won’t be an obstacle for your cable installation.

bend sensitive fiber cables

What is Bend Insensitive Fiber?

Bend insensitive fibers can produce minimum loss while transmitting light even if they are bent beyond the bend radius. In bend insensitive fibers, an optical trench is built with a lower refractive index material around the core so that the lost light can be reflected back in, thus minimizing data loss. At the same time, other factors like core diameter, wavelengths, single mode or multimode, etc are also optimized to minimize the losses due to excessive fiber cable bends during installation or maintenance.

Advantages of Bend Insensitive Fiber
  • Fiber cable installation errors due to steep cable bends (inside patch panels, racks, entrance/exit points, etc) can be avoided.
  • Bend insensitive fiber cables are very useful for indoor fiber cable installations as they can now be taken around walls, pillars, ceilings, ducts, and other uneven surfaces within the buildings.
  • Higher bandwidth applications can be confidently deployed using bend insensitive fibers as accidental excessive bending of fibers does not cause much of performance degradation.
  • Bend insensitive fibers also show a great deal of resilience in situations where fibers are fixed to surfaces using clamping, tie-wrapping or stapling.
  • Bend insensitive fibers can be spliced with the same methods used for normal cables, and in most cases, the normal fiber connectors and accessories are compatible to be used with bend insensitive fibers.

BIF cable for ftth

Why Choose Bend Insensitive Fiber For FTTH?

With the continuous demand of higher bandwidth, copper cables are reaching their limit to do the job. FTTH (Fiber to the Home) networks are expected to replace the copper networks with bend insensitive fibers. The bend insensitive cable has less attenuation compared with traditional fiber cables and this will make the installation and maintenance of the fiber optic cables more efficient.

In FTTH networks, people require the fiber optic cables to be bend-insensitive so that it is easier to deploy in the house, such as at the angled points inside the rooms along the walls. Another benefit we can get from bend insensitive fiber cables is that they are space saving. This is also the trend of future fiber optic network—smaller, denser and more efficient. Many companies such as FS.COM are able to provide the bend insensitive fiber optic cables compliant to ITU-T G657 standards.


Bend insensitive fibers can keep lower power loss under bend conditions. This kind of cable is quite necessary to the application of FTTH (Fiber to the Home) access network. FS.COM bend insensitive fiber patch cables are available for multimode (OM2, OM3 and OM4) and single-mode (OS2) networks. Each bend insensitive cable is manufactured with high-quality components and is thoroughly hand-tested for optimum optical performance. For more information, please contact us at