Optical module transmission rate

The transmission rate of an optical module refers to the number of bits (bits) of data transmitted per second, in units of Mb/s and Gb/s. The transmission rate usually ranges from 100Mb/s to 400Gb/s, and the common transmission rate is 1Gb /s, 10Gb/s, 25Gb/s, 40Gb/s, 100Gb/s and 400Gb/s. According to different transmission rates, optical modules can be divided into 1G optical modules (ie gigabit optical modules), 10G optical modules (ie 10G optical modules), 25 optical modules, 40G optical modules, 100G optical modules and 400G optical modules.

Transmission distance

According to the transmission distance, optical modules can be divided into three types: short-distance, medium-distance and long-distance. The transmission distance is more than 30km.

transfer method

Optical modules can be divided into three types: simplex optical modules, half-duplex optical modules and full-duplex optical modules according to the supported data transmission methods. Simplex optical modules only support data transmission in the same direction. For example, TV stations can send signals to viewers, but viewers cannot send signals to TV stations; half-duplex optical modules support data transmission in both directions, but do not support simultaneous data transmission. Carry out transmission in two directions, such as walkie-talkies can support mutual calls, but do not support simultaneous speech; full-duplex optical modules support data transmission in two directions at the same time, such as mobile phones can support simultaneous calls between two parties.

Center wavelength

The working wavelength of an optical module is a range, but we are generally used to using the center wavelength instead of the working wavelength to describe. Optical modules can be divided into ordinary optical modules and color optical modules according to different central wavelengths. The central wavelengths of ordinary optical modules are 850nm, 1310nm and 1550nm, while the central wavelengths of color optical modules include CWDM wavelengths and DWDM wavelengths. A color optical module with CWDM wavelength is called a coarse-collected optical module, and a color optical module with a wavelength of DWDM is called a dense-wave optical module.