In fiber optic networks, single fiber fiber optic transceivers are usually used. So, what are single-fiber transceivers and dual-fiber transceivers and how do they differentiate? Next, ZR Fiber will give you a detailed introduction!
1. What is a single fiber transceiver?
The single-fiber transceiver refers to the use of single-mode optical cable. The single-fiber transceiver needs to realize both the transmitting function and the receiving function. It uses the wavelength division multiplexing technology to transmit two beams of optical signals of different wavelengths in one optical fiber. So as to realize the sending and receiving. Therefore, the single-mode single-fiber transceiver transmits through a core optical fiber, so the transmitted and received light are transmitted through a single optical fiber core at the same time. In this case, to achieve normal communication, two wavelengths of light must be used to distinguish.
Therefore, the optical module of the single-mode single-fiber transceiver has two wavelengths of light, generally 1310nm/1550nm and 1550nm/1310nm, so there will be differences between the two ends of the interconnection of a pair of transceivers:
One end of the transceiver transmits 1310nm and receives 1550nm. The other end is to transmit 1550nm and receive 1310nm, so it is convenient for users to distinguish, and it is generally replaced by letters. The A-end (1310nm/1550nm) and the B-end (1550nm/1310nm) appeared. Users must use AB pairing, not AA or BB connection. The AB end is only used by single-fiber optical transceivers.
2. What is a dual fiber transceiver?
The dual-fiber transceiver uses two cores, one for sending and one for receiving.
The dual-fiber transceiver has a TX port (transmitting port) and an RX port (receiving port). Both ports transmit the same wavelength of 1310nm, and both receive 1310nm. Therefore, two parallel optical fibers are used for cross-connection. Shengwei can supply 10/100M, 10/100/1000M single-fiber and dual-fiber transceivers, which have the advantage of ultra-low latency data transmission
3. What is the difference between single-fiber transceivers and dual-fiber transceivers?
When an optical transceiver is embedded with an optical module, the optical transceiver is classified into a single-fiber transceiver and a dual-fiber transceiver according to the number of fiber cores of the connected fiber jumpers. The linearity of the optical fiber jumper connected to the single-fiber transceiver (right picture) is a fiber core, which is responsible for both transmitting and receiving data; while the fiber jumper connected to the dual-fiber transceiver (left picture) has a single fiber core. Linear is two cores, one of which is responsible for transmitting data and the other for receiving data.
When the optical fiber transceiver does not have an embedded optical module, it is necessary to distinguish whether it is a single-fiber transceiver or a dual-fiber transceiver according to the inserted optical module. When a single-fiber bidirectional optical module is inserted into the optical transceiver, that is, when the interface is a simplex type, the optical transceiver is a single-fiber transceiver (right picture); when a dual-fiber bidirectional optical module is inserted into the optical transceiver, That is, when the interface is a duplex type, the transceiver is a dual-fiber transceiver (left).
4. The role of fiber optic transceivers
a. Optical fiber transceivers can extend the transmission distance of Ethernet and expand the coverage radius of Ethernet.
b. The optical fiber transceiver can convert between 10M, 100M or 1000M Ethernet electrical interface and optical interface.
c. The use of optical fiber transceivers to construct a network can save network investment.
d. Optical fiber transceivers make the interconnection between servers, repeaters, hubs, terminals and terminals faster.
e. The fiber optic transceiver has a microprocessor and a diagnostic interface, which can provide various data link performance information.
Application Scenarios of Single Fiber Optical Transceivers
Through the introduction of ZR Fiber, I believe that everyone has an understanding of what is a single-fiber optical fiber transceiver and a dual-fiber transceiver. If you want to know more about ZR optical fiber series products, welcome customers to come to consult.
