Tag Archives: fibre optic transceiver

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

Fibre Optics Based on Multi Point Fibre Optic Distribution System

Multi point fibre 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 fibre 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 fibre optic transceiver assembly at the base station is commonly called a “head end” The distance end of the fibre is called “remote hub” equipment.

fiber optic distribution system

We need to pay attention to that each fibre 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 fibres are reduced by 50% but a WDM must be added at each remote site and another WDM for each fibre added at the repeater site. In the 4 remote site example, it would be taking 8 WDM’s to operate all the fibres full duplex and 4 fibre optic transmitters would have to be 1550nm models. Then there also a point we need to be careful. Fibre 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 fibre optic links in the fibre optic distribution system, sometimes we need fibre 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 fibre 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 fibre optic splitter, in the fibre 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 fibre cable, specific products can see at 50m single mode, it also can strengthen the signal used for the RF over fibre optic systems between the connected buildings for data communication and spare fibres.

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 Fibre 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 fibre 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 fibre optic module.

Brocade, senior technical personnel said: “we expect this high integration fibre 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 fibre 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 fibre optic transceiver market more rapid development.”

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