Cisco Gigabit Ethernet SFP Transceiver Modules introductions

SFP (Small Form-Factor Pluggable) transceiver is a hot swappable I/O device that plugs into a Gigabit Ethernet port or slot, linking the port with the network. Gigabit Ethernet SFP transceivers are designed to use with Gigabit networks. They are compliant to IEEE 802.3 standards and with different types to fit for 1000Base SX, LX/LH, EX and 1000Base-T applications.

 

It is important to choose a proper Gigabit Ethernet transceiver to act as an interface between the device and the cable. The interconnecting cable can be made of copper or fiber optic. This choice of transceiver is usually made based on the type of fiber optic cable.

 

Cisco Gigabit Ethernet SFP Transceiver Modules mainly include 1000BASE-T (or GLC-T) SFP, 1000BASE-SX SFP, 1000BASE-LX/LH SFP, 1000BASE-EX SFP, 1000BASE-ZX SFP, 1000BASE-BX10-D and 1000BASE-BX10-U SFP.

 

1000BASE-T (or GLC-T) SFP: Cisco GLC-T is a copper wire SFP for 1000Base-T applications. The 1000BASE-T SFP operates on standard Category 5 unshielded twisted pair copper cabling of up to 100m length. Cisco 1000BASE-T SFP module supports 10/100/1000 auto-negotiation and Auto MDI/MDIX.

 

1000BASE-SX SFP: 1000Base-SX SFP supports Multimode fiber only. It operates on 50μm multimode fiber links up to 550m, up to 1km over laser-optimized 50μm multimode fiber cable and on 62.5μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220m.

 

1000BASE-LX/LH SFP: 1000BASE-LX supports both Multimode and Single-mode fibers. 1000BASE-LX/LH SFP operates on standard single-mode fiber optic link spans of up to 10km and up to 550m on any multimode fibers.

 

1000BASE-EX SFP: The 1000BASE-EX SFP supports for Single-Mode Fibers. 1000BASE-EX SFP operates on standard single-mode fiber-optic link length up to 40 km. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity.

 

1000BASE-ZX SFP: The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length. The SFP provides an optical link budget of 23 dB, but the precise link span length depends on multiple factors such as fiber quality, number of splices, and connectors.

 

1000BASE-BX10-D and 1000BASE-BX10-U SFP: The 1000BASE-BX-D & 1000BASE-BX-U SFPs used for Single-Fiber Bidirectional applications. A 1000BASE-BX10-D device is always connected to a 1000BASE-BX10-U device with a single strand of standard SMF with an operating transmission range up to 10km.

 

The communication over a single strand of fiber is achieved by separating the transmission wavelength of the two devices. 1000BASE-BX10-D transmits a 1490-nm channel and receives a 1310-nm signal, whereas 1000BASE-BX10-U transmits at a 1310nm wavelength and receives a 1490nm signal. Wavelength-division multiplexing (WDM) splitter integrated into the SFP to split the 1310nm and 1490nm light paths, up to 80km or 1000base BX-D BIDI tx1550 rx1490nm 80km in simple.

Development of SFP Transceiver for DWDM Applications

Dense wavelength division multiplexing (DWDM)transmission systems, which have conventionally been adopted in long-haul backbone networks, are now being adopted in metropolitan area networks along with the recent rapid spread of multimedia services as typified by the Internet. In the applications for metropolitan area networks, the small form-factor pluggable (SFP) and other types of small optical transceivers are generally mounted in high density. Therefore, the development of DWDM optical transceivers in SFP package had been awaited.

Utilizing the accumulated technologies in SFP designing and wavelength control, the authors have successfully developed a 2.5Gbps optical transceiver for DWDM applications in the SFP platform (DWDM-SFP)by developing a compact coaxial transmitter optical subassembly (TOSA) with an integrated Peltier device.

 

Development of compact coaxial TOSA with integrated Peltier device

 

The external view of the newly developed coaxial TOSA with an integrated Peltier device and its pin assignments are shown in Fig. 1 and Fig. 2, respectively. A DFB laser diode (LD), a monitor photo diode (PD), a newly developed Peltier device for controlling the LD temperature and a thermistor for detecting the LD temperature are built into an 8-pin package. An isolator and a fiber receptacle are attached on it. By downsizing these internal parts and minimizing the heat load to reduce the power consumption, the authors realized a cooled coaxial TOSA that is 5.6 mm in diameter and 12.7 mm long, which is one-eighth the size of conventional cooled butterfly-type modules.

 

Figure 3 shows the case temperature dependence of he module’s power consumption. In this evaluation, he temperature and the current of the LD are set to 40 deg. C and 35 mA, respectively. As a result, the power consumption is successfully suppressed to 230 mW or lower, which is eight times smaller than the conventional butterfly-type module. This makes it easy to realize a DWDM-SFP having low power consumption and simple heat radiation structure.

 

Development of package

 

SFP is a pluggable optical transceiver of the size of little finger that is inserted into the open port of communication equipment as shown in Fig. 4. The outline dimensions and other important dimensional specifications of the SFP, such as the receptacle part that the optical connector is inserted into and the edge connector mating with the electrical connector of communication equipment, are standardized by a multi source agreement (MSA). The objective of the development was to create a package that meets not only MSA but also the following structure requirements at a low cost;1) the high-density packaging structure, 2) the efficient heat-radiating structure, and 3) the electromagnetic interference (EMI) shield structure. The solutions for satisfying these requirements are described below.

 

To realize the high-density packaging structure, the authors optimized the three-dimensional arrangement of the internal structure including the outline of the printed circuit board (PCB) and the electronic components on it.The maximum operating case temperatures of DWDM-SFP and TOSA are 70 and 75 deg. C, respectively. Therefore, it is necessary to keep the temperature difference between SFP and TOSA within 5 deg. C. The part number 1 and number 2 in Fig. 5 which take on the function of radiating heat, are made of copper alloy and their thermal conductivities are 350 and 300 W/mK, respectively. The part number 1 has the function of transporting heat from the transceiver IC and other components mounted on the PCB to the rear of the SFP. The heat from TOSA and receiver optical sub-assembly (ROSA) is transported by the thermal sheets at the upper and bottom sides of the package. Figure 6 is a conceptual diagram showing these three heat conducting paths, and Fig. 7 shows the result of the thermal simulation. In Fig. 7, the temperature of the area“a” is low enough compared to that of the other areas, which indicates that TOSA is well separated thermally from other heat sources. Figure 8 is the measurement result of the case temperature difference between TOSA and SFP. It shows that the temperature difference is below 5 deg. C at any condition.3-3 EMI shield structure The typical method for creating an EMI shield structure is to give metal plating to the receptacle part. Because metal plating is costly, the authors developed a new structure for EMI shielding by three-dimensionally assembling the internal sheet metal parts instead of conducting the plating process to the receptacle part. Figure 9 shows the result of the EMI measurement of 16 pieces of DWDM-SFP. The Federal Communications Commission (FCC) specifies that the electromagnetic radiation is to be strictly limited to below 54 dBuV/m.

There are also have some development in circuit board and Wavelength control technique, here we just not describe in details.

 

Conclusion

 

The authors have successfully developed a SFP-sized 2.5Gbps optical transceiver for DWDM applications. Miniaturization and low power consumption (1 W) are achieved by developing the following approaches; a compact coaxial TOSA with an integrated Peltier device, an optimized heat-radiation structure, and a high-density mounting board with the newly developed transceiver IC. In addition, the optimized TOSA design and precise wavelength control by CPU have allowed the transceiver to have a good wavelength stability, which sufficiently meets the 100 GHz grid spacing with only the temperature control of direct modulated LD. Moreover, an excellent characteristic was achieved in long-haul transmission. The authors are planning to develop the DWDM-SFP having higher added values, such as further low power consumption and RoHS compliance, in future. If you want to know more professional knowledge about the SFP or DWDM/CWDM/OADM, please contact fiber-mart.com. Here we will provide products such as CWDM/DWDM/modules, andCWDM OADM and DWDM OADM modules (such asDWDM 1 channel OADM).

The Solution to SFP Transceiver Module Connections

by www.fiber-mart.com

Recently I met a trouble that when I want interconnect WS c2960 24 TC L + 2 SFP with 1000base LH GLC LH SMD or GLC LH SM to WS C3750G 12S + 12 SFP ports, and I do not know which model of GLC LH SMD or GLC LH SM want to select, and I am going to use single mode fiber optic cable 1310m 9/125. If I need single mode SMD (2 fiber counts) or single fiber. I just want to find out WS C3750G12S + 12 SFP ports that 12 SFP ports are SM or SMD use LC connector. The solution to SFP transceiver module connections will be provided in this article.

 

In fact, I received several answers, someone says, the price between the 2 usually the same but GLC LH SMD SFP transceiver module supports additional option of DOM (digital optical monitoring). So he uses GLC LH SMD, as for which fiber cable, just use the single fiber cable, but I think so I use SMD how can I use single fiber cable, this is one way direction and i think i should use single mode duplex (2 fiber count). And can connect single mode duplex (2 fiber count) fiber cable to WS C3750G 12S.

 

Then someone from fiber-mart.com answered me that both the GLC LH SM and GLC LH SMD SFP transceiver module supports the IEEE 802.3 1000Base LX/LH standard and be good for compatible with each other. The difference between the two is the case that the GLC-LH-SMD transceiver has additional support for Digital Optical Monitoring capability. As for the second question, 1000base fx sfp, 1000base sx sfp, 1000base lx lh sfp, 1000base zx sfp, 1000base bx10 sfp, DWDM and CWDM SFP transceiver module: LC fiber connectors (single-mode or multimode fiber); 10GBASE-SR, LR, LRM, CX1 (v02 or higher) SFP+ Transceivers: LC fiber connectors (single-mode or multimode fiber).

 

Then if you have such similar problems, hope it can help you, and there I have a small tips for us, if you want to know where to get sfp transceiver and reach these effects, fiber-mart.com is a good place to get them, I found it do a professional site, and the price also reasonable, It is worth mentioning that fiber-mart.com is doing a big sales.

Can I Use SFP Transceiver in SFP+ Slot?

by www.fiber-mart.com

A common confusion about SFP and SFP+ compatibility is that if I can use the SFP module in SFP+ slot. When I connect the SFP transceiver to SFP+ transceiver, can SFP+ negotiate down to 1G? Or is it possible to use SFP+ module in the SFP port on my switch? Can SFP+ copper twinax cable can negotiate down to 1G to support SFP? Can 1G and 10G can exist in the same link? All these questions usually create a giant headache for many engineers. After looking up many relevant documentation, now I will conclusion the answers in this article.

 

SFP Can be Plugged into SFP+ Ports in Most Situations

I’m not sure about the specific switch model, but as a general rule of thumb, SFPs will work in SFP+ slot, but SFP+ optics do not work in SFP slots. It’s just a power availability thing. When you plug the SFP module in SFP+ port, the speed of this port is 1G not the 10G. And sometimes this port will lock the speed at 1G until you reload the switch or do some fancy set of commands. Besides, the SFP+ port usually can never support speed under 1G. That is to say, we can’t plug the 100BASE SFP in the SFP+ port. In fact, for this question, it may depend greatly on the switch models – sometimes SFPs are supported in SFP+ ports, and sometimes not. For example, almost all SFP+ ports of Cisco switch can support SFPs and many SFP+ ports of Brocade switch only support SFP+. Though it’s feasible often, it’s safer to ask your switch vendor for some information.

 

SFP+ Can’t Auto-negotiate Down to 1G to Support with SFP Module

To my knowledge, unlike copper SFPs which are available in 10/100/1000 auto-negotiation, optics such as SFP and SFP+ do not support auto negotiation at all. In fact, Most (95+%) SFPs and SFP+s will only run at the rated speed, no more, no less. Besides, there is no such thing as a SFP+ that does 1G on one side (towards the fiber) and then does 10G on another side (towards the unit). Though we can use SFP in SFP+ ports in many cases, that doesn’t mean a SFP+ plugged into the SFP+ slot can support 1G. In a fiber link, if we plug a SFP in the SFP+ port on one side (1G), and then plug a SFP+ in the SFP+ port on the another side (10G), this may not work! You just can’t have 10 GbE at one end and 1 GbE at the other. For this question, if you use SFP+ copper, it also can’t negotiate down to 1G.

 

When use SFP and SFP+ modules in your network, make sure the speed of both ends of the fiber link is the same. SFP modules may can be used in SFP+ slot, but a SFP can never be connected to a SFP+ module. For their different speeds, transmission distance and wavelength. 10 SFP+ only can use for 10G SFP+ port, and can never auto-negotiate to 1G.

How to Choose Switches and Patch Cables for SFP Transceiver?

by www.fiber-mart.com

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.

 

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.

 

fiber-mart.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.

 

fiber-mart.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.

 

Summary

 

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 Sales@fiber-mart.com for suggestion.

Fbt Coupler Fiber Optic Patch Cables And Dwdm Sfp Transceiver

by www.fiber-mart.com

Fiber optic splitter is used to split the fiber optic light into several parts at a certain ratio. We use fiber optic splitter to distribute or combine optical signals in many applications, such as FTTH solution, etc. Fiber optic splitters are important passive components used in FTTX networks. Fiber optic splitters can be terminated with different kinds of connectors, the main package could be box type or stainless tube type, one is usually used with 2mm or 3mm outer diameter cable, the other is usually used with 0.9mm outer diameter cables.

 

Two kinds of fiber splitters are popular used, one is the traditional fused type fiber optic splitter (FBT coupler), which features competitive prices; the other is PLC fiber optic splitter, which is compact size and suit for density applications. Both of them have its advantages to suit for different requirement. FBT Couplers are designed for power splitting and tapping telecommunication equipment, CATV networks, and test equipment. These components are available individually or integrated into modules for fiber protection switching, MUX/DMUX, optical channel monitoring, and add/drop multiplexing applications.

 

Major differences between PLC splitters and FBT Coupler

 

1. Technology behind FBT Coupler and PLC splitter.

FBT coupler: Fused Biconical Taper, this is traditional technology to weld several fiber together from side of the fiber.

PLC splitter: Planar Lightwave Circuit is a micro-optical components product, the use of lithography, the semiconductor substrate in the medium or the formation of optical waveguide, to achieve

branch distribution function.

 

2. Disadvantages and advantages between FBT and PLC.

PLC splitter FBT coupler

SpliSplit Ratio (Max) 1*64 splits 1*4 splits

EveEveness Can split light evenly Eveness is not very precise

SizeSizeSize Compact size Big size for multi splits

 

Fiber Patch Cable also known as fiber jumper or fiber patch cord, which is a fiber optic cable terminated with fiber optic connectors on both ends. There are two major application areas of Fiber

Patch Cable: computer work station to outlet and fiber optic patch panels or optical cross connect distribution center. Fiber optic patch cables are for indoor applications only. Single-mode fiber

Patch cable is primarily used for applications involving extensive distances. Multimode fiber optic patch cord, however, is the cable of choice for most common local fiber systems as the devices for multimode are far cheaper.

 

Jfiberoptic Dense Wavelength Division Multiplexing (DWDM) Small Form-Factor Pluggable (SFP) is available in all 100 GHz C-band wavelengths on the DWDM ITU grid. They are designed to Multi-Source Agreement (MSA) standards to ensure broad network equipment compatibility. As multirate interfaces they support any protocol from 100 Mbps to 4.25 Gbps. DWDM SFP transceivers provide the high speeds and physical compactness that today’s networks require while delivering the deployment flexibility and inventory control that network administrators demand. The 1.25G DWDM SFP transceivers are small form factor pluggable modules for bi-directional serial optical data communications such as 4x/2x/1x Fibre Channel, SDH/SONET, Ethernet applications. We supply 1.25G DWDM SFP modules are hot pluggable and digital diagnostic functions area vailable via an I2C serial bus specified in the SFP MSA SFF-8472. The DWDM SFP transceiver has undergone rigorous qualification and certification testing to provide End-to-End Compatibility using switching equipment from CISCO, BROCADE, JUNIPER, ALCATEL, HP (select models), NORTEL, EMC, QLOGIC and other OEMs.

Guide to SFP Transceiver Communication Standards

by www.fiber-mart.com

Over the years of SFP transceiver communication existence, there have been numerous different standards introduced. The great thing about SFP transceivers in networking hardware is that they allow a single piece of equipment, such as a switch, to support different wiring and transmission formats. The problem comes when trying to figure out which of the many transceiver types out there you need. There are several different types of SFP transceivers capable of supporting a multitude of communication standards, such as: CWDM/DWDM, SONET, Fibre Channel, Fast Ethernet and Gigabit Ethernet.

 

CWDM/DWDM SFP Transceivers

WDM, or wavelength-division multiplexing, is a type of technology that allows a transceiver to have different wavelengths assigned to it.Coarse wavelength-division multiplexing (CWDM) SFP transceivers are capable of transmitting data at eight different wavelengths ranging from 1470nm to 1610nm. CDWM SFP transceivers are color coded, to help identify which wavelength is mapped to the transceiver.Dense wavelength-division multiplexing (DWDM) SFP transceivers are available in 32 different wavelengths, and offer high-capacity bandwidth for serial optical data communications. DWDM SFP transceivers are slightly more expensive than CWDM SFP transceivers, but the more densely spaced channels allow for a greater number of wavelengths to travel over a single fiber.Both CWDM and DWDM SFP transceivers can be used to transmit data over Gigabit Ethernet, SONET and Fibre Channel.

 

SONET SFP Transceivers

Synchronous optical networking (SONET) technology enables the transmission of a large volume of data over long distances. SONET can be used to transmit multiple streams of data simultaneously over fiber optic mediums using laser beams and LEDs.SFP transceivers are built to transmit data over SONET at varying rates (OC-3, OC-12 and OC-48) and with different reaches (short-reach, intermediate-reach, and long-reach). SONET SFP transceivers are able to transmit data over both singlemode and multimode fiber.

 

Fibre Channel SFP Transceivers

Fibre Channel is a protocol which is used primarily in "Storage Area Networks". It comes in different speeds like 1xFC, 2xFC, 4xFC, 8xFC and 16xFC. Fibre Channel was developed as a lossless protocol in a time when switches were less reliable than they are today. When using Ethernet as a protocol, frames were dropped, which created a problem for applications like data traffic. With the advent of greater technology, switches are now much more reliable; however, Fibre Channel still holds a small advantage over Ethernet when it comes to consistency and latency.Fibre Channel SFP transceivers are modules comonly used in storage area networks (SAN) and are available in 1, 2, 4, 8, 10, 16 and 20Gbps data transmission rates. Fibre Channel SFP transceivers can be used in both singlemode and multimode fiber applications.

 

Fast Ethernet and Gigabit Ethernet

Fast Ethernet is slowly being replaced with Gigabit Ethernet. Fast Ethernet SFP transceivers were originally designed to transmit data at 10Mbps, and eventually reached transmission speeds of 100Mbps (100Base). 100Base rate Fast Ethernet transceivers are available in the following interface types: FX, SX, BX and LX10.With the development of Gigabit Ethernet, SFP transceiver transmission rates increased to 1000Mbps (1000Base). 1000Base rate Gigabit Ethernet SFP transceivers are available in the following interface types: T, SX, LX, LX10, BX10, and the non-standard EX and ZX.

 

fiber-mart.com is sure to have the right SFP transceiver for your network! We carry a full line of both name-brand and affordable 100% compatible transceivers of every type your business could possibly need. Contact us today for a free consultation on which standards meet your business needs, or to discuss fiber connectivity network solutions that will best support your future business plans.

1.25G SFP Transceiver Solution

by Fiber-MART.COM

SFP optical module is a compact optical transceiver module used in communication field. SFP optical transceivers are designed to support SONET/SDH, Fast Ethernet, Gigabit Ethernet, Fibre Channel and other communications standards. It interfaces a network device motherboard (switch, router, media converter or similar device) to a Fiber Channel or Gigabit Ethernet optical fiber cable at the other end. SFP transceivers are available in a wide range of data rates including 155M, 622M, 1.25G and 2.5G, which allows users to choose the most suitable transceiver for each link. Today’s article will illustrate the most popular 1.25G SFP transceivers.

 

Description of SFP Transceiver

 

SFP modules can be divided into different types according to different standard. Here is what you need to know about SFP modules. The transmission distance of a SFP is up to 120km for single-mode and 2km for multimode fiber. The SFP fiber transceiver could be dual fibers with LC connectors, or single fiber with LC or SC connectors. The wavelengths could be 850nm, 1310nm and 1550nm. The 1.25G SFP optical transceiver modules are available in different standard such as 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, etc. The following part explains such types.

 

1000BASE-SX SFP Transceiver

 

1000BASE-SX SFP transceiver is a cost effective 850nm module supporting dual data-rate of 1.25Gbps/1.0625Gbps. It is compatible with the IEEE 802.3z 1000BASE-SX standard and operates multimode fibers link up to 550 m. The fiber optic transceiver consists of three sections: a VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. This SFP type (e.g. J4858B) is usually applied for Fiber Channel links, Gigabit Ethernet links, Fast Ethernet links, etc. J4858B (see in Figure 1) is HP 1000BASE-SX SFP that is widely welcomed by overall users.

 

1000BASE-LX/LH SFP Transceiver

 

1000BASE-LX/LH SFP transceiver is a high performance 1310nm transceiver for single-mode fibers. It is compatible with the IEEE 802.3z 1000BASE-LX standard and also supports dual data-rate of 1.25 Gbps/1.0625 Gbps with a transmission distance of 10 /15 /20 km. Cisco GLC-LX-SM-RGD (shown in Figure 2) is 1000BASE-LX/LH SFP that can operate on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. HP J4860C is a 1000BASE-LH SFP that can operates over 1550nm for a distance of 70km. Unlike Cisco GLC-LX-SM-RGD SFP, J4860C can support a much longer distance of 70km, which is ideal for long-haul network application.

 

10/100/1000BASE-T SFP Transceiver

 

10/100/1000BASE-T SFP Transceiver is compatible with the Gigabit Ethernet standard as specified in IEEE STD 802.3. It supports data rates of 10/100/1000 Mbps, fully satisfying 10/100/10001000BASE-T applications such as LAN 10/100/1000Base-T Fiber Channel links, Gigabit Ethernet over Cat 5 Cable, Switch to Switch Interface, Router/Server interface, etc.

 

Why Choose Compatible SFP Module

 

We have introduced several SFP modules above including the HP SFPs. The original SFP optical transceivers are very expensive, the simple solution to this is to find a reliable OEM vendor. Besides saving cost, there are many others reasons that you should choose to purchase a compatible SFP, SFP+ or XFP fiber optic transceiver. For example in a scenario where gigabit speed is required to run across a point-to-point link, the distance between the link length is assessed and an appropriate SFP transceiver module native to the host device is chosen. If a HP platform was in situation, then the selection of module will be limited by among the following: 550 meter (J4858B), 10km (J4859B), 40km (JD061A) or the maximum 70km (J4860C). Using a compatible SFP you can choose from a variety of distance limits from 550meters up to 100km in numerous increments with distances of 160km being achievable on the top product lines.

 

Another advantage of use compatible SFP transceivers is the freedom to tailor the transceiver to your individual requirement. Custom serial numbers can be added both to the product label and also hard coded to the device itself. Latches can be color coded for high density link identification Fiberstore also provide a recoding service in China, this specific service means existing SFP's can be adapted if the host device is to be changed. In some instances, even cross-device compatibility is quite possible.

 

Conclusion

 

Because of its high performance and small size, SFP transceiver replaces the former GBIC module and becomes the most used fiber optic transceiver module in the telecommunication industry. Currently, many optical vendors supply optical transceiver modules. Fiberstore, as a professional telecom manufacturer and supplier, offers a full range of SFP optical transceivers that are 100% compatible with large brands. We are committed to provide high-quality products and long-term customer services to our customers. Any interested in our products, you can contact us directly.

The Features, Types and Advantages of SFP Transceivers

by Fiber-MART.COM

SFP transceiver stands for Small Form-factor Pluggable transceiver. This transceiver is compact and hot-pluggable. It is widely used in the field of Data Communication and Networking. This transceiver mainly acts as an interface between a networking device and its interconnecting cable.  This networking device can be any switch, repeater, router, multiplexer etc. The interconnecting cable may be made of copper or it can be an optical fiber cable. This transceiver which interfaces a device in the network to the cable is highly popular and can support devices and cables of various network vendors.

 

SFP transceivers are compatible with a number of communication standards like Ethernet, SONET along with many other standards. SFP is an upgraded version of Giga Bit Interface Converter (GBIC) module. SFP uses LC fiber optic cable for its interface whereas SC cable interfaces are used in GBIC. sfp transceiver is more space saving than GBIC, since the former has only half the size of the latter. SFP has transmission rate ranging from 100Mbps to 4Gbps and it can work at distances ranging between 500 meters to hundreds of kilometers. The ‘hot-pluggable’ feature of SFP makes it flexible. Any future changes can be easily incorporated into the SFP module, while the maintenance of the module is also made easier by this hot-pluggable nature of SFP, thereby making it compact.

 

The devices are specifically designed to closely match a number of applications, with improvements on the DSP block and support for very low cost and low power SERDES links. The ECP5 FPGAs provide the flexible connectivity required in outdoor small-cells, at extremely low-cost. They can also enable a smart sfp copper transceiver solution for broadband access equipment, including integrated operation and maintenance.   Outside of communications, ECP5 devices offer low cost, low power PCI Express side-band connectivity for microservers. For industrial video cameras, ECP5 FPGAs can implement the entire image processing functionality in a device that consumes under 2W. Enhancements leading to 30% lower total power than other FPGA solutions include stand-by mode operation of the individual blocks including SERDES, dynamic IO bank controllers and reduced operating voltage.

 

SFP transceivers are of various types and each type comes with different configurations of transmitter and receiver. It is important to choose a proper transceiver to act as an interface between the device and the cable. This choice of transceiver is usually made based on the type of fiber optic cable. Such SFP transceivers which are used to provide the necessary reach to a fiber optic cable are categorized as optical SFP. These SFP modules are of several versions, wherein each version has different values of working wavelength and working distance: typical wavelength of different modules are 850 nm, 1310 nm and 1550 nm with working distances of 550m (SX), 10 km (LX) and 40 km (XD) respectively. There are also other types of SFP like DWDM, CWDM and bi-directional SFP with single fiber having upstream and downstream working wavelengths of 1310 nm and 1490 nm.

 

Certain SFP transceivers also use copper cables as interface. This will cause a device in the network to send their data over shielded or unshielded twisted pair cable. Usually such copper cable interfaces are used when the information to be transmitted needs to cover only shorter distances where use of copper cable is more economical than optic fiber cables.

 

SFP transceivers comply with the Multi Source Agreement between different manufacturers. Optical sfp plus transceiver come with digital monitoring features with the help of which one can monitor the performance of SFP in real time. This feature can be used to monitor SFP’s performance parameters like working temperature and wavelength, supply voltage, optical input and output etc. These transceivers have a PCB in them which connects to an electrical connector designed for SFP. SFP transceiver also has a 256 byte EEPROM memory. SFP transceivers are housed in a metal enclosure and their power dissipation is low. They operate over a wide temperature range and support a large number of different types of cable. An improved version of SFP standard called SFP+ can support transmission rates up to 10Gbps.

 

Thus SFP transceivers will soon replace all the existing interface standards in networking because of their compactness, flexible and economical design and high performance.