Tag Archives: fiber optic transceiver

How to Choose a Right XFP Transceiver Module?

Optical transceiver module plays an important role in optical communication network. Why is it called transceiver? A transceiver has both transmitter and receiver which are combined to form a unit and use the same channels. So word “transceiver” takes “trans” from “transmitter” and “ceiver” from “receiver”. And that’ the device with functions of transmitting and receiving.

Optical transceivers have many types, including SFP, GBIC, XFP, SFP+, CFP, QSFP+, etc. They are most often used in computers, telephones and radios. In its simplest sense, a transceiver is widely used for computer networking purposes. Whenever you discuss networking, you immediately come to think of neighborhood networks and Ethernet standards. But some types of Ethernet networks require the utilization of specific types of transceivers in order to work.

Maybe you will not face the issue about buying optical transceivers by yourself. But what if one day you came across this problem. For example, if you are going to buy 10G XFP transceiver modules, you must know about something to get transceivers at very reasonable rates prior to making your decision. So you are suggested to know the tips of how to choose the right transceiver for you or your friend connection nearby or at office.

xfp transceiver

XFP transceiver module is a hot pluggable component for high speed computer network and telecommunication links that use optical fiber. It can be applied in the application of 10 Gigabit Ethernet and DWDM fiber optic networks. XFP transceiver module is a protocol autonomous optical translation device. The main feature of XFP transceiver module is that it can support 9.95Gb/s to 11.1 Gb/s data rate, transmission distance up to 80 km and operating temperature range is 0°C~70°C. Today, many kinds of XFP transceivers are available in the market, such as 10GBASE-LR XFP, 10GBASE-ER XFP, 10GBASE-SR XFP, 10GBASE-ZR XFP. See how far each XFP transceiver module can support.

10GBASE-LR XFP: the maximum distance is 10 kilometers over 1310 SMF;
10GBASE-ER XFP: the maximum distance is 40 kilometers over 1310 SMF;
10GBASE-ZR XFP: the maximum distance is 80 kilometers over 1310 SMF;

The most popular and widely used is 10GBASE-SR XFP transceiver module which has a working distance of 300 meters maximum via OM3 MMF.

Since the development of internet shopping, you can buy a transceiver from local store or from the internet. But the question is how to make sure that you can buy a high quality transceiver as there are so many online shops? Two most widely used and reliable brands of transceivers are Cisco and Juniper. Before making your decision, try to read the reviews on the web and testimonials from people who have used these brands. That will help a lot.

However, the brands are too expensive. There are various companies who develop 10G XFP transceiver module. And those are called the third party transceivers. So maybe you can choose compatible brands which have the same functions and ideal compatibility ideal for Cisco, Juniper, etc.. These XFP transceiver modules are also developed on the basis of international industrial standards and are severely checked for compatibility with tools and devices from large organizations in industry. The most important is that the price of compatible XFP transceiver module is extremely low!

FS.COM is one of the companies which have cost-effective XFP transceiver module. We provide 10GBASE-LR XFP, 10GBASE-ER XFP, 10GBASE-SR XFP, 10GBASE-ZR XFP, Bidi XFP, CWDM XFP, DWDM XFP. All XFP transceivers have gone through quality assurance test program to realize full compatibility. Compatible brands include Cisco, Juniper, Brocade, HP, Netgear, etc.. For more information about XFP transceivers, please read the article: XFP Transceiver Module.

The Recognition of Fiber Optic Transceiver

Fiber Optic Transceiver Overview

What is an Optical Transceiver Module?
A fiber optical transceiver is a device that can send and receive optical information. By using an optical transceiver, network spend less space and steer clear of the necessity of getting a transmitter and receiver in the network. Able to transmit information further and faster than older models, the more recent transceivers are utilized and appearance, creating more compact, smaller sized modules than ever before.

How does it work?
A fiber optic transceiver is a accessory acclimated to forward and accept optical information. There are a number of different components on these devices, including a light source and an electrical component. The transceiver has two ends, one that an optical cable plugs into and accession for abutting an electrical device. Fiber optic transceivers combine a fiber optic transmitter and a fiber optic receiver in a single module. They are arranged in parallel so that they can operate independently of each other. Both the receiver and the transmitter have their own circuitry and can handle transmissions in both directions. In fiber optic data links, the transmitter converts an electrical signal into an optical signal, which is coupled with a connector and transmitted through a fiber optic cable. The light from the end of the cable is coupled to a receiver, where a detector converts the light back into an electrical signal. Either a light emitting diode (LED) or a laser diode is used as the light source.

Principle of Optical Transceiver Modules
Optical transceiver generally includes both a transmitter and a receiver in a single module. The transmitter and receiver are arranged in parallel so that they can operate independently of each other. Both the receiver and the transmitter have their own circuitry so that they can handle transmissions in both directions. The transmitter takes an electrical input and converts it to an optical output from a laser diode or LED. The light from the transmitter is coupled into the fiber with a connector and is transmitted through the fiber optic cable plant. The light from the end of the fiber is coupled to a receiver where a detector converts the light into an electrical signal which is then conditioned properly for use by the receiving equipment.

Optical Transceiver Solution

Application of Optical Transceiver Modules
Optical transceiver, essentially just completed the converted of data between different media, can realize the connection between two switches or computers in the 0-120km distance. Its main function is to achieve the conversion between optical-electrical and electrical-optical, including optical power control, modulation transmission, signal detection, IV conversion and limiting amplifier decision regeneration. In addition, there are some functions like security information query, TX-disable. Here is a summary in the practical application.

  1. Optical transceivers can interconnect with switches.
  2. Optical transceivers can interconnect between the switch and the computer.
  3. Optical transceivers can interconnect with computers.
  4. Optical transceivers can act as the transmission repeater.
    When the actual transfer distance exceeds the nominal transmission distance of the transceiver, in particular, the actual transfer distance exceeds 120km alerts, with 2 sets transceiver back to back in the case of on-site conditions allow, repeaters or the use of “optical-optical” conversiona relay, is a very cost-effective solution.
  5. Optical transceivers can offer conversion between single-mode and multimode fiber connection.
    When the networks appear to need a single multimode fiber connection, you can use a multimode transceiver and a single-mode transceiver back-to-back connections, which can solve the problem of single multimode fiber converted.
  6. Optical transceivers can offer WDM transmission.
    The lack of resources of long-distance fiber optic cable, in order to improve the utilization rate of the fiber optic cable, and reduce the cost, transceiver and wavelength division multiplexer (WDM multiplexer) with the use of two-way information on the same fiber transmission.

Optical Transceiver modules can be classified according to the following aspects.

1. Optical Fiber Type
Single-mode fiber transceiver and Multimode fiber transceiver. The single-mode version has a transmission distance of 20 to 120 km, while the multimode one’s is 2 to 5 km. Due to the different transmission distance, the transceivers’ transmit power, receiver sensitivity and the use of wavelength will be different.

2. Optical Fiber Count
Simplex fiber transceiver and Duplex fiber transceiver. The simplex version receives the data sent in a single fiber transmission, While the duplex one receives data transmitted on a dual fiber transmission.By definition, single fiber devices can save half of the fiber, a fiber that is in the receive and transmit data, where the fiber is very applicable to resource constraints. These products use the wavelength division multiplexing techniques, mostly using the wavelength 1310nm and 1550nm.

3. Transmission Rate
Transmission rate refers to the number of gigabits transmitted per second, per unit of Mbps or Gbps. Optical modules cover the following main rate: low rates, Fast, Gigabit, 1.25G, 2.5G, 4.25G, 4.9G, 6G, 8G, 10G and 40G.

4. Package
SFP, SFP+, GBIC, XFP, XENPAK, X2, 1X9, SFF, 200/3000pin, XPAK, etc.

Fiberstore Optical Transceiver Solution

Fiberstore is a worldwide leading manufacturer & supplier of compatible fiber optical transceivers. We produce and stock for a full range of transceivers such as SFP Plus (SFP+), X2, XENPAK, XFP, SFP, GBIC. In the market, there are many brands of fiber optic transceiver, such as HP, Cisco, NETGEAR, Dell, etc. The following table is the order information of HP SFP transceiver:

Part No. Description
SFP-1GT-1MA-HP HP JD089B X120 compatible 1000BASE-T SFP Copper RJ45 100m
SFP-1G85-5MA-HP HP JD118B X120 compatible 1000BASE-SX SFP 850nm 550m DDM MMF
SFP-1G31-10A-HP HP JD119B X120 compatible 1000BASE-LX SFP 1310nm 10km SMF
SFP-1G85-5ME-HP HP J4858B X121 compatible 1000BASE-SX SFP 850nm 550m MMF
SFP-1G85-5MF-HP HP J4858C X121 compatible 1000BASE-SX SFP 850nm 550m MMF
SFP-1GT-1MD-HP HP J8177C X121 compatible 1000BASE-T SFP Copper RJ45 100m
SFP-1G31-10F-HP HP J4859C X121 compatible 1000BASE-LX SFP 1310nm 10km SFP SMF
BLSFP-1G34-10-HP HP J9143B X122 compatible 1000BASE 1310nmTX/1490nmRX BIDI SFP 10km SMF

Fiber Optics Based on Multi Point Fiber Optic Distribution System

Multi point fiber optic distribution system is the broad wireless technology used to deliver voice, data, Internet, and video services. It has been allocated for that deliever broadband services in a point to point or point to multi point configuration to residential and commercial customers. As a result of the propagating characteristics of signals so that the systems use a cellular like network architecture, though services provided are fixed, not mobile.

In some cases fiber optic distribution system has an ability to connect several remote sites to one base station. One common application is that the repeaters based on a major building and others building such as RF shielding areas and basement which all located in a few miles repeater building. A and the repeater use the head end. A multiple fiber optic transceiver assembly at the base station is commonly called a “head end” The distance end of the fiber is called “remote hub” equipment.

fiber optic distribution system

We need to pay attention to that each fiber optic receiver output at the repeater site has individual pads to reduce the composite noise floor. For example, if used the 40dB, an additional 80 dB of combiner port-to-port isolation occurs. In real application, it is a good idea, including regard the taps at test point to read the RF levels. Just used for testing and protection. A similar system that when we used the WDM, if the numbers of fibers are reduced by 50% but a WDM must be added at each remote site and another WDM for each fiber added at the repeater site. In the 4 remote site example, it would be taking 8 WDM’s to operate all the fibers full duplex and 4 fiber optic transmitters would have to be 1550nm models. Then there also a point we need to be careful. Fiber optic transceiver is not frequency selective and the same unit can receive 1330 or 1550nm optical signals equally well. We also measured the noise performance and we are happy to inform you that in line with theory, optic splitters practically do not add any noise. No matter what output we tested, this means that your receiver connected to such network would also show very high quality readings.

When we use the fiber optic links in the fiber optic distribution system, sometimes we need fiber optical splitter to split the signal which carried. The system designer has the choice of splitting either the optical or RF domain. The function of optical splitter is familiar to RF splitter. Other parts of the incoming fiber optic network are connected to the transmission of output, and the terminal device is connected and the another main part is its direct part. There are also splitters that divided the input into 2, 4 or more outputs. According to the structure and locations of fiber optic splitter, in the fiber optic network, we need different split ratios of splitter, such as 1×2, 1×4 and 1×8 splitter?and so on. Moreover unused single mode fiber cable, specific products can see at 50m single mode, it also can strengthen the signal used for the RF over fiber optic systems between the connected buildings for data communication and spare fibers.

Article Source: http://www.fiber-optical-networking.com/2015/02/09/fiber-optics-based-on-multi-point-fiber-distribution-systems/

MSA to Boost 400Gbps Copper Network Cable and Optical Fiber Transceiver Market

Five leading global companies plan to come to an agreement of multiple sources (multi – source agreement, MSA) to create CDFP (400Gbps form – factor pluggable) industry alliance, defines fiber optic transceiver module/plug and mainboard electric mechanical dimension edge connector .

New CDFP MSA aims to regulate and encourage 400Gbps hot swap module’s  development and commercialization, this module integrates 16 transport channels to receive 16 channels, supports passive and active copper networks, as well as the active fiber optic module.

Brocade, senior technical personnel said: “we expect this high integration fiber optic transceiver module allows network equipment maker has high density and higher data throughput of 400Gbps system solutions, MSA group plans to develop specification details, to promote the industry using compatible high density products.

CDFP MSA vendors are interchangeable in terms of mechanical and electrical products, this project will set electrical interface, optical interface and mechanical interface, may include optical fiber connector and plug with cable plug, electrical connectors, guide rail, the front panel and the main PCB layout requirements. Moreover, MSA specification is expected to include thermal, electromagnetic and electrostatic discharge design.

Molex group product manager Scott Sommers, said: “through the establishment of the front panel, the hot swap of 16 channel 400Gbps module of multiple sources of compatible, the collaboration is committed to increasing customer choice and ensure interoperability and interchangeability, fundamentally promote the whole copper and fiber optic transceiver market more rapid development.”

For more information about copper network cable and optical fiber transceiver, please visit our website: www.fs.com.