Wavelength division multiplexer and corresponding optical module

Abstract

The invention provides a wavelength division multiplexer and a corresponding optical module. The wavelength division multiplexer comprises an input optical fiber, a first output optical fiber, a second output optical fiber, a focusing lens, and a dielectric film filter. The input optical fiber, the first output optical fiber and the second output optical fiber are located on the left side of the focusing lens, and the dielectric film filter is located on the right side of the focusing lens. The dielectric film filter has a first light splitting surface and a second light splitting surface, wherein the second light splitting surface has a preset angle relative to the first light splitting surface, and the plane where the first light splitting surface is located intersects the plane where the second light splitting surface is located. According to the wavelength division multiplexe, composite light beams are split through the filter with a specific structure, so that the output optical fiber correspondingly outputs light with a corresponding wavelength, and the purpose of splitting the lights is achieved. In the actual manufacturing process, the process of sticking a reflection pieceand the filter is eliminated, the manufacturing process is simple, and the yield is high.

Description

【Technical field】 [0001] The invention relates to the technical field of optical communication, in particular to a wavelength division multiplexing device and a corresponding optical module. 【Background technique】 [0002] With the continuous development of communication technology, the penetration rate of optical fiber communication network is getting higher and higher. WDM (Wavelength Division Multiplexing, abbreviated as WDM) is to combine a series of optical signals carrying information but with different wavelengths into one bundle and transmit them along a single optical fiber; A communication technology in which optical signals of different wavelengths are separated. Wavelength division multiplexers can effectively save fiber resources and networking costs. They are mainly used in the convergence and access layers of metropolitan area networks, and can build networks and carry out services in a short time. Because of their low cost, low power consumption, and small ...

AI Technical Summary

Problems solved by technology

This solves the technical problems in the prior art that the bonding of the reflector and the multilayer dielectric film filter is difficult, the production is difficult, the debugging efficiency is low, and the yield rate is low.

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