Category Archives: Optical Transceiver

sfp+,x2,XENPAK,XFP,SFP,GBIC,CWDM,DWDM,GPON,GEPON&Digital Video SFP transceiver

Introduction to Cisco SFP Modules for Gigabit Ethernet

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As it is known to all, Cisco is a top worldwide leader in telecommunication industry. Its products and services are excellent, which includes application networking services, optical networking, routers, switches, interfaces and modules, etc. This article will not introduce all Cisco products, only focus on Cisco SFP modules for Gigabit Ethernet.

Firstly, we should have a brief review about the term “Gigabit Ethernet”. In computer networking, Gigabit Ethernet, or marked as GbE or 1 GigE, is used to describe various technologies for transmitting Ethernet frames at a rate of a gigabit per second. It is defined by the IEEE 802.3-2008 standard. The standards for Gigabit Ethernet are as below.

Name Medium Specified distance
1000BASE-CX Shielded balanced copper cable 25 meters
1000BASE-KX Copper backplane 1 meter
1000BASE-SX Multi-mode fiber 220 to 550 meters dependent on fiber diameter and bandwidth
1000BASE-LX Multi-mode fiber 550 meters
1000BASE-LX Single-mode fiber 5 km
1000BASE-LX10 Single-mode fiber using 1,310 nm wavelength 10 km
1000BASE-EX Single-mode fiber at 1,310 nm wavelength ~ 40 km
1000BASE-ZX Single-mode fiber at 1,550 nm wavelength ~ 70 km
1000BASE-BX10 Single-mode fiber, over single-strand fiber: 1,490 nm downstream 1,310 nm upstream 10 km
1000BASE-T Twisted-pair cabling (Cat-5, Cat-5e, Cat-6, Cat-7) 100 meters
1000BASE-TX Twisted-pair cabling (Cat-6, Cat-7) 100 meters

After reviewing the Gigabit Ethernet standards, let us move on to Cisco SFP Modules for Gigabit Ethernet. According to Gigabit Ethernet standards, Cisco SFP modules for Gigabit Ethernet have many types, such as 1000BASE-T SFP, 1000BASE-SX SFP, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX SFP etc. Below text will introduce the three most common types: Cisco 1000BASE-T SFP, Cisco 1000BASE-SX SFP and Cisco 1000BASE-LX/LH SFP.

Cisco 1000BASE LX/LH SFP transceiver module
Cisco 1000BASE-T SFP—Cisco GLC-T

The Cisco GLC-T is compliant with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE STD 802.3 and 802.3ab. Cisco GLC-T operates on standard Category 5 unshielded twisted-pair copper cabling of link lengths up to 100 m (328 ft). It supports RJ-45 connector. Moreover, Cisco GLC-T has low power dissipation (1.05 W typical). The operating temperature range of Cisco GLC-T is 0 to 70°C.

Cisco1000BASE-SX SFP—GLC-SX-MMD

The GLC-SX-MMD, compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multi-mode fiber links up to 550 m and on 62.5 μm fiber distributed data interface (FDDI)-grade multi-mode fibers up to 220 m. It can support up to 1km over laser-optimized 50 μm multi-mode fiber cable. And GLC-SX-MMD could be connected with dual LC/PC connector. The average output power is -9.5~ -3dBm and receiver sensitivity is -17dBm. Its operating temperature range is -5 to 85°C.

Cisco1000BASE-LX/LH SFP—GLC-LH-SMD

The GLC-LH-SMD, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10km and up to 550m on any multi-mode fibers. It is joint with dual LC/PC connector. And the transmit and receive wavelength ranges from 1270nm to 1355nm. The average output power of GLC-LH-SMD is -9.5~ -3dBm, too. However, the receiver sensitivity is -21dBm.

As stated above, Cisco GLC-T, GLC-SX-MMD and GLC-LH-SMD can be applied under Gigabit Ethernet and have their own features. If you are looking for all or one of them, Fiberstore is an excellent choice. Fiberstore provides fine Cisco GLC-T, GLC-SX-MMD, GLC-LH-SMD and many other SFP modules at very reasonable price.

A New Age for Fiber Optic Transceiver

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For transceivers, an optical interoperation with the associated circuitry is the key to success of application. Copper transceiver and fiber optic transceiver, as the two leading transceiver modules for data transmission, have their own unique benefits and drawbacks. This article has a brief comparison between copper transceiver and fiber optic transceiver, then explain why fiber optic transceiver is more preferable than copper transceiver.

Copper Transceiver vs Fiber Optic Transceiver

Copper is the de-facto standard for transmitting data between devices due to its low cost, easy installation and flexibility. Certainly, it possesses distinct defects too. Copper transceiver is best when applied in short length. Typically copper transceiver supports transmission distances of up to 100 meters or less. When employed over long distances, the electromagnetic signal characteristics will hinder performance.

On the other hand, fiber optic transceiver is often used for remote campus connectivity, crowded wiring closets, long-distance communications and environments that need protection from interference, such as manufacturing areas. It is extremely reliable and less susceptible to attenuation. Fiber optic transceiver supports multimode and single mode fiber optic cable types with transmission distances up to 120 kilometers. So fiber optic transceiver has a longer transmission distance than copper transceiver.

Fiber Optic Transceiver: A More Preferable Solution

Nowadays, more and more organizations choose to utilize fiber optic transceiver as it offers greater advantages than the conventional copper transceiver.

fiber optic transceiver

Firstly, fiber optic is made of glass, so it does not conduct electricity. And it is immune to electromagnetic interruption and lightning. Copper cable will produce electromagnetic currents that can interfere network if not properly installed. So fiber optic transceiver has more interference resistance than copper transceiver.

Secondly, fiber optic is generally free from corrosion as it is made of glass and not water or chemically sensitive. Thus it has no risk of being destroyed by any harsh elements. Also it can bear the living conditions that conventional copper cable fail to do, such as direct contact with the soil. Moreover, fiber optic is of small size and weight, for the same transmission capacity, copper cable requires more lines than fiber optic. The reduced number of lines allows for maximum space utilization. Thus for fiber optic transceiver, the maintenance and service expenses are much lower than the copper transceiver.

Thirdly, fiber optic can make the transmission of data with greater flexibility due to its unlimited bandwidth. It can support the increased information carrying capacity. The practical bandwidth far exceeds that of copper cable. Using fiber optic transceiver helps to minimize attenuation in your system. As a result, fiber optic transceiver provides greater data safety and efficiency.

As stated above, fiber optic transceiver is more preferable than copper transceiver. And it has been lauded as an innovation that would push broadband speeds forward. Hence, it is widely employed by more and more organizations. Fiberstore offers large kinds of high quality fiber optic transceiver at very low price. It’s a primary option for you.

Do You Still Worry About The Cost of Fiber Optic Transceivers?

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transceiver moduleTo many users, there is an inevitable issue that the cost of fiber optic transceivers will keep adding up over time. This is why the demands of 3rd party compatible fiber optic transceivers have emerged in the market. Actually, 3rd party compatible fiber optic transceivers are the direct solution for a tight budgets. However, some issues mayoccur when using 3rd party compatible fiber optic transceiver that drive users to give it up. The worry of the cost of fiber optic transceivers still exists. This paper is going to talk about the fiber transceiver industry and discuss something you should know about the 3rd party compatible fiber optic transceivers.

Fiber Optic Transceiver Industry
When you buy transceivers for your switch, you are told to buy them from your network equipment manufacturer in order to keep your system running properly and safely. However, the switch vendor doesn’t actually manufacture these transceivers. In fact, the fiber interface transceiver manufacturers will supply a variant of their standard transceiver to the switch vendor for resale. The switch vendor will perform testing of that transceiver against their switch, create a compatibility matrix and SKU for that transceiver and start selling the transceiver. They mark up the price of the transceivers to cover their costs (to test/procure/stock etc..) and make a profit. This is why the “brand” transceiver modules are more expensive.

However, as long as the transceiver complies with the required IEEE and MSA standards all it would take is a quick compatibility test and for the vendor could publish a list of all supported transceivers. Thus, 3rd party compatible transceivers are not hard to be realized. In order to corner the market, the switch vendor will request that the transceiver vendor flash the transceivers EEPROM with a vendor specific identifier. The switch operating system will use the I2C bus to query the transceiver EEPROM data, and verify that the transceiver has the correct identifier. If the identifier doesn’t match, then the OS will not power up the laser. The idea is that the switch vendor doesn’t want you to put anything into your router which hasn’t been approved by them. This is why many users will face error warning when using the 3rd transceivers.

How To Solve? – “My 3rd party transceiver does not work on my switch”
So, how to solve this issue and successfully use 3rd party transceivers on your switch? First, you should know the hidden commands of your switch. I believe some of my blog fans may know it as I have explain it some weeks ago in another papers. Yes, the “service unsupported-transceiver” command. Certainly, it is take Cisco for example, but it is easy to find the equivalent commands in other brand switches along the way. (For more details can visit this paper link.)

3rd Party Transceivers vs “Brand” Transceivers
User who have experience of buying 3rd party transceivers and “brand” transceivers may know that the the major difference is cost. So, how much difference? Assuming you get an identical transceiver from Cisco and Fiberstore, the list price for an SR SFP+ transceiver from Cisco is $1,495 USD, while Fiberstore’s one just listed at $ 18.00 USD. This difference is incredible, but it is the truth. The truth is that you won’t have to sacrifice any quality or reliability with all of the savings you receive. In contrast, you get everything you’ve come to expect from the 3rd party transceivers at up to 90% off list price. As high-density merchant-silicon based switches become mainstream, the per-port cost of the switch is dropping dramatically. The transceiver costs now become a very large part of the total system cost and, for a 48-port switch the transceiver costs could easily exceed the base cost of the switch. 3rd party transceivers help users to save more on their cost of transceivers, so why not do it?

Of course, 3rd party transceivers are good option for your transceivers solutions. However, at least so far, the market is not fully normalized. Though the prices of 3rd party transceivers are very attractive, but the good and bad are intermingled. If you plan to buy the 3rd party transceivers for your switch, you had better to choose a vendor with high reputation. I recommend Fiberstore for you. Why? You may know the answer after you try.

Article Source: http://www.fiber-optic-transceiver-module.com/do-you-still-worry-about-the-cost-of-fiber-optic-transceivers.html

Optimistic about the Development of 40G and 100G Network Devices in the Future

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In June of 2010, the IEEE 802.3 ba 40G/100G standard issued. The Standard Approval timeline for IEEE 802.3ba is depicted in the figure. It makes me looking good forward to its development in the future. Traditional 10G port modules usually adopt LC connector, they are connected by dual cores while 40G Ethernet specification requires 8 cores connections, just 4 cores used for transmitting and another 4 cores used for receiving. Better advice for 40G Ethernet is that the 12 cores fiber cabling solution, each channel has 4 special transmitting fiber and 4 special receiving fiber, middle 4 fibers remain free. 100G Ethernet solution requires to make 24 fibers, it divided into two 12 fibers, one for receiving and another for transmitting, and each of the array, middle 10 fibers used for transit traffic, the two fibers on the ends are setting free.

Several years ago, once we met customers who wants to know if our transceiver modules support 40G and 100G ports, we will tell them that some suppliers who launched the 40G and 100G optical transceiver module are mostly based on previous 40G/100G draft, they are not the standard ports, and different vendors exist connection trouble, so we are all not sure. But nowadays, with the mature development of 40G and 100G cores, many supplier launched them their own fiber optic transceiver. In the field of 40G and 100G, device manufacturers adopt the advantage of long term evolution and 40G network which focus on 100G network communication equipment. In fact, it is the estimated results that operator who faces with 40G and 100G network. In the next year, 40G long distance transmission network market supplier will launch the 100G network transmission devices, it will bring a big challenge to the operator. The fact dedicates that fiber optic device operators will do double budgets for current production to meet the demand of the future developments.

In the network market, WDM devices are quite popular between global operators. It makes the sales of the products to improve highly. Adjustable and pluggable optical transceiver module, such as XFP, become quite popular in the ROADM network market, it will broaden the network scopes of operators, includes IP/Ethernet CMTs, OLTs FTTH, DSLAMs. As for the 10G SFP+ transceiver module, such as 10G SFP+ 1550nm 80km, it sales reached three times, they are primarily applied into 10G Ethernet and 8G/16G fiber channel. The main reason why development speed of 100G fiber network faster than 40G is that the price of 100G network is lower than 40G, so the much lower LR4 modules will have a great future. Related product: SFP-10G-LR, see at the figure.

Faced with the rapid progress of 40G and 100G optical transceiver modules, FS.COM also research its brand. Including production and sales of 40G and 100G. FS.COM has high quality and reasonable price. Our fiber optical transceivers all pass certification. If you have fiber optical transceivers needs, FS.COM will be your first choice.

Customized Empty 4RU Rack Chassis

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The Fiberstore company can offer customized empty 4RU rack chassis to hold 12 pieces of standard size LGX cassettes now. They can also provide the custom LGX cassettes to complete this entire solution for space saving and high-density applications. Here are some finished products for example.

Fiberstore

Fiberstore

Fiberstore

Fiberstore

The specifications are described in the figure below.

Fiberstore

Fiberstore can offer various customized chassis on customers’ requirements, for example:

  • 1RU rack mount chassis that hold 2 pieces of small size LGX cassettes
  • 1RU rack mount chassis that hold 4 pieces of small size LGX cassettes
  • 4RU rack mount chassis that hold 12 pieces of standard size LGX cassettes

This is just an iceberg of custom cases that Fiberstore provides. They could make it beyond what you can imagine!

Contact Fiberstore sales now at sales@fiberstore.com and tell them what you want!
They’ll find the info you’re looking for and respond to your inquiry within one business day.

About Fiberstore:
Fiberstore is now the largest company who can supply all kinds of solutions for WDM optical networking systems, including CWDM, DWDM, MUX & DEMUX, OADM, etc.. The 4RU rack chassis is only a little part of their products. You can find whatever you want by just visiting the website (fiberstore.com).

Cisco GLC-T Compatible SFP Transceiver Module

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Cisco GLC-T SFP is a mini GBIC transceiver work with Category 5 wiring for max 100 meters span. GLC-T SFP is compliant to 1000Base T standards for Gigabit Ethernet. Cisco GLC-T is hot-swappable so that when they are deployed, the equipment does not need reboot. FiberStore GLC-T SFP products are fully compatible with Cisco routers and switches, they provide full duplex Gigabit Ethernet links to high-end between wiring closets over existing copper network infrastructure.

Features

  • Up to 1.25Gb/s bi-directional data links
  • Hot-pluggable SFP footprint
  • Extended case temperature range (0°C to +85°C )
  • Fully metallic enclosure for low EMI
  • Low power dissipation (1.05 W typical)
  • Compact RJ-45 connector assembly
  • Access to physical layer IC via 2-wire serial bus
  • 1000 BASE-T operation in host systems with SERDES interface
  • 10/100/1000Mbps compliant in host systems with SGMII interface

Specifications

  • Manufacturer: FiberStore
  • Product Type: SFP transceiver module
  • Data Rate: 1Gbps
  • Wavelength: N/A
  • Transfer Distance: 100m
  • Connector Type: RJ45
  • Cable Type: Copper

OEM and ODM

FiberStore designs, develops, manufactures and markets a diverse portfolio of high-performance, cost- competitive fiber optic communication products for all applications. We are mainly engaged in providing complete sets of optoelectronic device solutions to gain more brand extensions and influence for FiberStore in the world.

OEM/ODM order is available

We can supply SFP-1GTX-1M-CO according to your requirements, and design SFP-1GTX-1M-CO label and packaging for your company. Welcome any inquiry for customized SFP+ optical transceiver. Our Cisco GLC-T price is very reasonable.

Order Procedure

Please contact us with any special requirements you may have, we can help you create a custom solution to meet almost any application. Our engineer will review the project and provide a quotation within 1-2 business days.

a. Email (sales@fiberstore.com) or Call (+86-75583003611) us a rough sketch to a detailed drawing.

b. Our engineer will review the project and provide a quotation within 24 hours.

c. We can arrange production as low as 1 piece and as high as 1,000 pieces in 1~4 business days once an order is placed.

FiberStore is an professional manufacturer & supplier of optical transceivers. All of our transceivers are tested in-house prior to shipping to guarantee that they will arrive in perfect physical and working condition. We guarantee transceivers to work in your system and all of our transceivers come with a lifetime advance replacement warranty.

Related Article: A Quick Overview of Cisco 1000BASE-T GLC-T SFP Copper Module

Buy Cisco GLC-SX-MM SFP For Fiber Optic Networks

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Using the rise of communication standards. Global companies now come face-to-face utilizing the fact that they have to upgrade their fiber optic network systems. This way, they get to support data transformation in all forms. This is where periphery components like the Cisco GLC-SX-MM Transceivers prove useful.

The GLC-SX-MM is a hot-swappable tool that connects a Gigabit Ethernet interface, as well as the video machine to the main harbour using the multilevel. It is also commonly used between switches, Wireless LAN Controllers, and firewalls. It is a Short Form-Factor Pluggable that works well having a wide selection of services and products, and can be mixed and matched on the port-by-port basis. This makes it quite competent in either simple or extremely complex networking environments. On top of that, the GLC-SX-MM has high end modules that sustain a data-rate of just one.25 Gbps. For multi-mode fibers, which are probably the most commonly installed types in communal settings, it can transmit data as much as 500mm.

SFP transceivers usually come in different models. This allows the consumer to modify and configure the machine in a manner that it gets proper optical reach, either with multi-mode or single-mode optic fiber cables. The four categories of SFP modules would be the SX, that is 850nm, the ZX, which is 1550nm, the LX that is 1310nm and the DWDM. They are typically created using copper cable interfaces, which permit a host device for connecting via unshielded twisted-pair network cable. The CWDM can also be utilized through single optic cables, and they’re 1310/1490 upstream and downstream.

There are several known producers of SFPs and it’s important that you will get to understand these brands, especially Cisco, if you are planning to grow your network. That way, you’re able to acquire the right kind of gear that would complement the body. If you are looking to buy these things, you may to stick to only one manufacturer, so that compatibility issues don’t arise. Despite the generalization of the IEEE standards that made parts more flexible and inter-changeable for diverse networking needs, there’s still minimal be certain that Avaya networking products would work with Netgear and Cisco gadgets. Now, since Cisco is among the pioneering companies and established brands when it comes to network systems with 28 many years of service, customers can be assured that they will automatically work in any network setup and that in-house engineers will know how to configure them to stabilize the linkages.

When buying Cisco SFP transceivers and supporting network tools, it’s possible to expect costly investments because these are not equipped cheap. However, with thorough research, it is possible for an organization to obtain fair prices for their purchases. It is essential, though, they get expert consultancy first, before any transaction is made. This approach, the specified outcomes are insured, and delays, as well as excess expenses won’t be realized. The Internet provides expansive info on network systems, as well as reliable retailers of networking accessories. Thus, you won’t need to break a sweat in searching for those exact pieces you need.

Keep up with the Development in Networks Nowadays

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You aren’t by yourself if you have difficulty keeping up with today’s development in networks. There appears to be considered a lot of ruckus over things to get, when you should have it and why. Allow me to assist you to.

The greatest method to transmit data nowadays is with light-based fiber optics instead of the ancient form of electronic signals and the two greatest modules with this would be the SFP and XFP modules, which are a symbol of small form factor placable with X standing for 10 gigabyte. These modules were formed to bring you greater quality from your signal. Additionally, it’s an economical method of providing changeable gigabyte ethernet fiber optic interfaces to switches and hubs that are equipped with a stock SFP slot.

Finding a trusted retailer, and fully knowing optical transceiver modules is going to be helpful when it comes time to create you buy the car. You will have networking questions and concerns. Therefore finding an experienced fiber networking vendor will be crucial. You will have to have the data possible to make a good choice when choosing manufacturers as well as their modules.

Superior optical fibers transport waves of information sent by optical transceiver modules. Modules transport and receive optical signals. Underneath the Multi-Source Agreement, these form factors are made by companies. Specific standards must be met in their building. Transfer speeds are what exactly are accustomed to classify optical transceivers together. Each supports rates from 1Gbps to 10Gbps. Module factors are referred to as SFP and GBIC are 1Gbps. These form factors support transmissions larger than 4Gbps right down to 100mbps. Modules are known as XENPAK, XFP, X2 and SFP support speeds of up to 10Gbps transportation.

10G XENPAK modules are the widest in 10G transceiver interfaces and can include a dual SC fiber interface. Cisco SFP modules can be found in multi-mode and single-mode optical fiber wire, as well as operating in copper wire. 15 meters may be the normal transmission length of a copper module. 300 meters be the transmission reach of multimode lines.

10G XFP transceivers are equipped for 10G network applications, including 10G Ethernet. The conventional for developing these was made by some of the leading manufacturers in the field. Straightforward to care for and change. They’re also small hot plug-hole. This module is utilized in conjunction with laser multimode fibers.

Optical networking solutions are definitely an industry that is constantly on the expand and grow. Their email list above is only a sum of the optical options that you may have to choose from. Once again, choosing the best distributor will be just like crucial as your education of optical transceivers, and how they work. A vendor who sells a broad selection of optical interfaces is going to be helpful. It’s critical they at least have a background experience in all kinds of fiber optical products. This is really crucial if you’re not an expert yourself.

Before you start to play with your new gadget you could try to buy a fiber optic tester to ensure all is in working order and that nothing has been all messed up because of debris or oil. A 20km distance tests are most popular, but try a patch cord if you’re in a bind. Lucent connectors or LC connectors are the resulting fiber ports to connect to the optical modules. Remember, look at and clean the fiber connector prior to plugging in; they cannot work if blocked with even a small piece of debris.

The Evolution and Trends Of Fiber Optic Transceiver

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When it comes to fiber optic transceiver, we can easily think of a lot of different package formats like 1X9, GBIC, SFF, SFP, etc. 1X9 package optical module was first produced in 1999, with SC head, is fixed optical transceiver products, usually directly solidified on the circuit board of communication equipment, used as a fixed optical module. Then, 1X9 package optical module was gradually developed towards miniaturization and hot-pluggable.

Fiber Optic Transceiver

Fiber optical module products began to develop in two aspects. One is hot-pluggable optical module, which became GBIC. The other is small, with LC head, directly solidified to the circuit board, which became SFF 2X5, or SFF 2X10. Both GBIC and SFF optical modules have been widely used.

GBIC Fiber Optic Transceiver

GBIC module, once widely used in switches, routers and other network products. The old Cisco and other vendors’ switched and routers have been widely adopted GBIC modules. Compared with 1X9, GBIC has obvious advantages, hot-pluggable feature makes GBIC can used as an independent module, users can easily maintain, update fiber optic transceiver and fault location. However, with the continuous development of network, GBIC module’s shortcomings also gradually appeared. The main disadvantage is its large size, resulting in a smaller density of service boards, boards can not accommodate a sufficient number of GBIC, unable to adapt to the trend of rapid development of network.

SFF Fiber Optic Transceiver

SFF module, is another branch of fiber optic modules’ evolution, now is widely used in EPON system. In the EPON ONU system, all adopt SFF module. The main reason why ONU use SFF optical module is EPON ONU products are usually placed in the users, require fixed rather than hot-pluggabe. With the rapid development of EPON technology, SFF market is gradually expanding.

SFP Fiber Optic Transceiver

SFP is the latest fiber optic transceiver, also is the most widely used module currently. SFP module is hot-pluggabe (like GBIC) and small (like SFF). Using LC head, and its size is small as 1/2 to 1/3 as that of GBIC Module, which greatly increases the port density of network device, adaptable to the trend of the rapid development of the network, so it has been the most widely used. Currently the main equipment manufacturers, without exception, no one abandoned GBIC products and only produce SFP transceiver. Thanks to the centralized standards, SFP modules from different manufacturers can be compatible with each other, SFP is available as a stand-alone network equipment.

According to the rate, fiber optic transceiver can be divided into 100Base, 1000Base (Gigabit) and 10GE for Ethernet, 155M, 622M, 2.5G and 10G for SDH, which all have been widely used, and now the rate of 40G and 100G has appeared. The 10G modules are widely used in the main transmission, mainly include XENPAK, X2, XFP and 10G SFP+.

XENPAK Fiber Optic Transceiver

XENPAK module is an important step in the evolution. XENPAK in architecture for media access controller provides a XAUI interface. Serializer / deserializer to 10 Gbps available payload and forward error correction overhead assigned to the interface 4 channels, each one line signaling rate decreased to 3.125 Gbps. Compared with non-hot-pluggable, XENPAK module is very attractive, but it can not meet the demand of some important market. XENPAK power is typically 10W, caused a certain influence on the structure of size. Because it increases the printed circuit board manufacturing costs and reduce valuable trace space.

X2 Fiber Optic Transceiver

X2 transceiver also uses electrical interface(like XENPAK), but there are a few exceptions. X2 provides a 4-bit port address space, a bit less than XENPAK. X2 also reduces the number of power pins, and the bottom plate and electrical grounding utilities. X2 retained the 4 vendor-specific pin as Xenpak. In optical technology, X2 supports 10GbE, OC192 SONET, 10GFC and other standards.

XFP Fiber Optic Transceiver

XFP (10 Gb small form factor pluggable module), it provides a architecture with its four-channel interface different from XENPAK. XFP is a single-channel serial module using a XFI (10 Gb Serial Interface) connection at full speed, can replace XENPAK and its derived products. Without serializer / deserializer, XFP is smaller, cheaper and less power consumption.

SFP+ Fiber Optic Transceiver

SFP+ module is smaller than XFP, the circuit for clock and data recovery is transferred to the card from the chip. SFP+ module compressed size and power consumption through putting the CDR and electronic dispersion compensation outside the module.

No matter how fiber optical module develops, it has its own direction. Currently fiber optical transceiver mainly toward the directions of miniaturization, low cost, low power, high speed, long distance and hot pluggable.

Cisco Leads 100G Ethernet Switch Market

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In first quarter of 2013, the worldwide Ethernet switch market was $ 4.7 billion, decreased by 8% compared with 2012Q4, but an increase of 1%. 40G is the only port shipment growth products, an increase of 2%, which was mainly due to 40G fixed switches (such as 16xQSFP+) and chassis-based switches 40G line cards. Cisco is the early leader in 100G Ethernet switch port.

Due to the influence of seasonal factors, in first quarter of 2013, the Ethernet switch sales fell, but the past three quarters, the overall is still increased, taking into account the continued weakness in Europe and the U.S. federal government expense decreased , this is a positive signal.

In first quarter of 2013, port shipments fell 4%. 10G, which is generally considered as a star product, the chain fell highest.

40G is the only port shipment growth products, an increase of 2%, which was mainly due to 40G fixed switches (such as 16xQSFP +) and chassis-based switches 40G line cards.

Almost all of the Ethernet switch equipment manufacturers on a quarter-on-quarter drop.

Cisco is the early leader in 100G Ethernet switch port.