Optical module

Abstract

The invention discloses an optical module and relates to the technical field of optical fiber communication. The optical module is used for reducing light spot area after splitting of light beams in order to allow light to enter an optical fiber in a coupling mode conveniently, and reducing weakeness of light intensity in average unit area to some extent to prolong the transmission distance of the light beams in the optical fiber and improve monitoring accuracy on the light beams of a detector. A light emitting device in the optical module is used for emitting light to form a main light beam, part of light in the main light beam enters a light splitting reflective surface and is reflected by the light splitting reflective surface to form one path of light split beam, and the other part of light does not enter the light splitting reflective surface to form one or more paths of light split beams. The light spot area of the light split beams is identical to that of the main light beam. An optical fiber interface is used for receiving a path of the light split beams to perform light transmission, and the detector is used for receiving one path of the rest of the light split beams to perform photoelectric monitoring.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical module. Background technique [0002] At present, the optical fiber network is the main channel of Internet information exchange, and the optical module is an important device in the optical fiber network. In order to realize functions such as multi-use of light and power monitoring of light-emitting devices, an optical module is required to split a channel of light. [0003] In the prior art, the light beam splitting generally adopts the working principle of partial reflection and partial refraction. like figure 1 As shown, after the main beam S reaches the slope 11 of the beam splitter, a part of the main beam is refracted by the slope 11 of the beam splitter to obtain the beam S1, and another part of the optical fiber of the main beam S is reflected by the slope 11 of the beam splitter to obtain the beam S2, The sub-beam S1 is condensed by the...

AI Technical Summary

Problems solved by technology

[0006] Since the cross-sectional areas of the sub-beams S1 and S2 are basically the same as the cross-sectional area of ​​the main beam S, and the light intensities of the sub-beams S1 and S2 are smaller than the light intensity of the main beam S, the average of the sub-beams S1 and S2 is Compared with the light intensity per unit area of ​​the main beam S, the light intensity per unit area is weakened, so that the detection result of the sub-beam S2 by the detector 13 is inaccurate. At the same time, since the transmission distance of the light beam in the optical fiber is affected by various factors, , under the same other conditions, the weaker the light intensity per unit area of ​​the beam is, the shorter the transmission distance in the fiber is, therefore, the shorter the transmission distance of the sub-beam S1 in the fiber

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