How to put single fiber optical transceiver a and b?

The ab end of the fiber optic transceiver is the transmitting end (a end) and the receiving end (b end), and the two ends of the single fiber transceiver are the A end and the B end respectively. The wavelengths of these two ends are different, and the wavelength of the transmitting end is shorter than that of the receiving end. The dual-fiber transceiver is actually not divided into AB ends, because the wavelengths at both ends are the same, but the TX (transmitting) end and the RX (receiving) end are divided when connecting.

How to use the AB end of the fiber optic transceiver?

The AB end of the fiber optic transceiver is usually used in pairs, the A end is used to transmit, and the B end is used to receive. People can be divided into single-fiber transceivers and dual-fiber transceivers according to the number of cores connected to optical fibers, but many people use single-fiber transceivers on the market.

The two ends of the single-fiber transceiver are the A-end and the B-end respectively. The wavelengths at these two ends are different. The wavelength of the transmitting end is shorter than that of the receiving end. In fact, the dual-fiber transceiver does not have the A and B ends, because the wavelengths at both ends are the same. Just divide the TX (transmitter) end and the RX (receive) end when connecting.

As the name suggests, a single fiber is an optical fiber, and it is also nicknamed a single-core transceiver by the industry. The optical wavelength of the double fiber is cross-connected by two optical fibers, and the inner optical film block has only one wavelength.

Summarize:

1. Terminal A transmits and terminal B receives. First of all, there are two types of fiber optic transceivers according to the number of fiber cores, one is a single-mode dual-fiber fiber optic transceiver, and the other is a single-mode single-fiber fiber optic transceiver. We talked about A, B. Only single-mode single-fiber fiber optic transceivers are used.

2. Because the single-mode single-fiber transceiver is transmitted through a core optical fiber, 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.

3. Therefore, the optical module of the single-mode single-fiber transceiver has two wavelengths of light, generally 1310nm/1550nm, and the long distance is 1490nm/1550nm. In this way, there will be differences between the two ends of the interconnection of a pair of transceivers, and one end will be different. The transceiver transmits at 1310nm and receives at 1550nm.

4. The other end transmits 1550nm and receives 1310nm. It is convenient for users to distinguish, and letters are generally used instead.

5.A terminal (1310nm/1550nm) and B terminal (1550nm/1310nm) appear. Users must use AB pairing. AA or BB connection is not possible.