Optical communication parts

The optical module is the core device of optical communication. In optical fiber communication, the role of the optical module is very important. It mainly completes photoelectric conversion and electro-optical conversion, and converts the sent electrical signals into optical signals; and then converts the optical signals into electrical signals for transmission through optical fibers. It is mainly composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic device includes two parts: a light emitting device and a light receiving device.

Divided by function, the optical communication parts in the optical network can be divided into two categories: optical active devices and optical passive devices.

It is mainly responsible for the generation, amplification and reception of optical signals, and completes the functions of light-electricity, electric-optical conversion and amplification of signals. Optical active devices include fiber amplifiers, fiber lasers, optical detectors, optical transponders, and optical modulators. These devices are the key components of optical transmitters, optical receivers and optical repeaters. Together with optical fibers, they determine the basic optical fiber transmission system. s level.

It is mainly used to control the flow direction of the optical signal, on and off, and the shaping of the optical signal. Optical passive components include optical fiber connectors, optical fiber couplers, wavelength division multiplexers, optical switches, optical attenuators, optical isolators, optical filters, and optical splitters. These devices extend the structure and function of optical fiber communication systems. And performance improvement are indispensable.