For half a century, optical transmission technology has been developing continuously.The development and progress of light sources, transmission media, transmission technology, optical devices and other aspects have promoted the overall improvement of optical networks. Communication optoelectronic devices are the foundation and basis of optical fiber communication technology, and the milestone optical device technology has had a profound impact and tremendous change on the development and application of optical fiber communication.

As a practitioner of optical communication technology, BIO Optoelectronics will take you into the development history of optical fiber communication technology in the form of installment columns.

In the 1970s, the emergence of semiconductor lasers operating continuously at room temperature and low-loss optical fibers made it possible to commercialize optical communication systems;

In the 1980s, the emergence of DFB lasers made fiber single-mode transmission possible, and the transmission distance and transmission quality of fiber optic communication systems were greatly improved;

In the 1990s, the realization of optical amplifiers such as EDFA laid the foundation for long-distance transmission of optical fiber communication;

In 2000, wavelength division multiplexing/demultiplexing devices such as AWG were commercially used in DWDM systems, which greatly expanded the transmission capacity of optical fiber communication;

In 2010, coherent optical communication technology developed vigorously. Compared with traditional IM/DD, coherent optical communication system has the advantages of high sensitivity, long transmission distance, good wavelength selectivity, and large communication capacity. The capacity has been raised to a higher level;