an optical module

Abstract

The application provides an optical module, including a laser and a laser driver chip, and a lens assembly covered on the laser and the laser driver chip, wherein the lens assembly is provided with an emitting lens on the inner cavity wall facing the laser and the laser driver chip , the surface of the emitting lens and the cavity wall around the emitting lens are coated with a reflective film, and the laser light reflected twice by the laser driver chip is not coated or partially coated with a reflective film in the irradiated area of ​​the cavity wall of the lens assembly. In this way, during the working process of the optical module, after the laser light reflected by the transmitting lens at the edge of the laser driver chip is reflected twice on the inner wall of the optical lens assembly cavity, the reflection direction of the light is a random direction, thereby reducing the reflection to The laser drives the light intensity in the non-edge area of ​​the chip, avoiding excessive laser irradiation from causing performance interference to the clock data recovery module in the non-edge area of ​​the laser chip, and promoting the stability of the optical module.

Description

technical field [0001] The present disclosure relates to the technical field of optical fiber communication, in particular to an optical module. Background technique [0002] In an optical fiber communication system, an optical module is a connection module that performs photoelectric conversion. A typical optical module usually includes two parts: a transmitting end and a receiving end. The transmitting end is used to convert the electrical signal into an optical signal and then transmitted through the optical fiber, and the receiving end is used to convert the optical signal transmitted by the optical fiber into an electrical signal. [0003] figure 1 It is a schematic diagram of an internal basic structure of an optical module. figure 2 for figure 1 Side view of the internal structure of the optical module. Such as figure 1 with 2 As shown, the most important components in the optical module include the optical lens assembly 10 used at the transmitting end, the las...

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Problems solved by technology

[0006] The embodiment of the present invention provides an optical module to solve the problem in the prior art that the laser driver chip in the optical module is irradiated by laser light, which affects the working stability of the optical module

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