A kind of optical wavelength division multiplexing device

Abstract

The invention discloses an optical wavelength division multiplexing device, which comprises a light combining part, a first conducting part, a light splitting part and a second conducting part, and the light combining part is used for converging several beams of optical signals with different wavelengths to the end face of the first conducting part At the same position, the light splitting part is used to inject the optical signals of different wavelengths propagated by the first conducting part into different second conducting parts respectively, and the first conducting part and the second conducting part are used to transmit optical signals respectively; the light combining part It includes protrusions arranged along the cross-section of the light beam, the protrusions are arranged in a circular array, and the ring arrays formed by the protrusions with different radii are used to transmit and converge optical signals of different wavelengths. to the same position on the end face of the first conducting part. The optical wavelength division multiplexing device of the present invention can converge the optical signals of different wavelengths to the same position on the end surface of the transmission part without dispersion during the optical multiplexing process, which overcomes the defects in the prior art.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical wavelength division multiplexing device. Background technique [0002] At present, human society has entered the era of information explosion. With the increasing amount of information, the requirements for communication transmission capacity are also increasing. In the field of optical communication, optical signals of more bands can be transmitted simultaneously in one optical fiber, which can effectively improve the information transmission capacity. Lossy wavelength division multiplexing is a key technical problem to be solved in this field. [0003] In the prior art, the blazed grating type wavelength division multiplexer uses the blazed grating to realize the light wave multiplexing process and the light wave demultiplexing process. The grating emits all optical signals at the same angle, and the combined light is coupled into the transmission fib...

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Problems solved by technology

However, during the multiplexing process of this kind of wavelength division multiplexer, due to the dispersion problem of the lens, it will not be able to ideally couple the optical signals of different wavelength bands into the transmission fiber

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