Wavelength division multiplexing optical delay tuning device and application based on fiber optic mirror and lcfbg

Abstract

The invention discloses a wavelength division multiplexing light delay tuning device based on a fiber reflector and an LCFBG, and an application. Firstly, a wavelength division multiplexing light delay real-time tuning device based on the fiber reflector and LCFBG in a following manner: enabling a port 2 of an optical circulator to be connected with an input end of a wavelength division multiplexer, enabling one output end of the wavelength division multiplexer to be connected with the fiber reflector, and enabling the remaining (N-1) output ends to be connected with (N-1) linear chirp fiber bragg gratings with different parameters; secondly, the light delay tuning device is connected to an N-way wavelength division multiplexing light transmission channels for signal transmission. The device can achieve the output of N discrete delay signals through one optical circulator, carries out the real-time tuning of the delay of one or some signals based on the above, is simple in structure, is high in tuning precision, is large in tuning range, is small in manufacturing difficulty, and is low in cost.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and in particular relates to a wavelength division multiplexing optical delay tuning device and application based on an optical fiber reflector and an LCFBG. Background technique [0002] As an important medium for optical information transmission, optical fiber has been extensively studied in the fields of optical fiber communication and optical fiber sensing. When an optical signal is transmitted in an optical fiber, the longer the optical fiber distance, the longer the optical signal transmission takes. Therefore, optical fibers can be used to make delay devices. With people's in-depth research and understanding of optical fibers, people have gradually started to use a variety of complex independent optical fiber devices from the earliest use of simple optical fiber structures, such as wavelength division multiplexers, fiber optic mirrors, fiber gratings, optical circulato...

AI Technical Summary

Problems solved by technology

This solution requires multiple groups of different optical delay devices based on fiber optic mirrors and wavelength division multiplexers to cooperate with the switching of optical switches to realize discrete tuning of optical delay, which is bulky, complex in structure, and cannot be continuously tuned.

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