Wavelength division multiplexing digital communication experiment teaching system

Abstract

The invention provides a wavelength division multiplexing digital communication experiment teaching system which comprises a signal sending terminal machine, a first WDM (Wavelength Division Multiplexer), a second WDM and a signal receiving terminal machine, wherein the signal sending terminal machine is used for converting original analog signals into optical signals; the first WDM is used for coupling the optical signals into an optical fiber transmission link; the second WDM is used for separating the superposed optical signals in different wavelengths from the optical fiber transmission link and transmitting the separated optical signals in different wavelengths to the signal receiving terminal machine; the signal receiving terminal machine is used for restoring the optical signals from the second WDM into the original analog signals. An all non-programming system design structure is adopted by the wavelength division multiplexing digital communication experiment teaching system, so that the high-quality transmission of two paths of signals at low error code rate can be realized; the later maintenance is convenient and the cost is low; students can more directly understand the knowledge, such as pulse code modulation, generation of a group synchronization code set, operation of inserting the generated group synchronization code set into a frame header of each frame data, CMI coding and decoding, group synchronization and data grouping and pulse code demodulation; the teaching application value is ultrahigh.

Description

technical field [0001] The invention relates to a wavelength division multiplexing digital communication experimental teaching system, in particular to an experimental teaching system based on a non-programming chip suitable for communication majors in colleges and universities. Background technique [0002] With the rapid development of communication technology and the increasing social needs, informatization has played an irreplaceable role in our lives. However, the complete popularization of informatization still has a long way to go. Therefore, it is urgent to cultivate a group of talents with innovative spirit and strong practical ability to support the further popularization of national informatization, which is the historical mission of higher education. [0003] Courses such as communication principles and optical fiber communication are important professional courses for communication and electronic information majors in colleges and universities. They have the ch...

AI Technical Summary

Problems solved by technology

However, this kind of digital signal optical fiber transmission experimental teaching system designed with non-programmable chips has not been reported so far, and the specific experimental system is even more vacant.

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