an optical module
An optical module and laser technology, applied in the field of optical modules, can solve problems affecting the working stability of optical modules, and achieve the effect of avoiding performance interference and reducing intensity
Active Publication Date: 2020-02-14
HISENSE BROADBAND MULTIMEDIA TECH
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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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[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0021] At present, in order to ensure the consistency of the optical power of each optical path in the optical module, the surface of each emitting lens in the optical lens assembly of the optical module is usually coated with a one-time coating and the coating area is required to be as large as possible. The lens surf...
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The invention provides an optical module, belonging to the field of optical communication. The optical module provided by the embodiment of the invention comprises a circuit board and a lens component, wherein a laser device and a laser device driving chip are arranged on a surface of the circuit board, and the lens component is arranged over the laser device and the laser device driving chip in amanner of covering; an inner cavity wall, facing towards the laser device and the laser device driving chip, of the lens component is provided with a transmitting lens, the surface of the transmitting lens and the inner cavity wall around the transmitting lens are respectively provided with a reflecting thin film; light emitted towards the transmitting lens from the laser device is reflected by the reflecting thin film on the surface of the transmitting lens and then irradiates on an edge of the laser device driving chip, and an area of the inner cavity wall of the lens component, where the light reflected again irradiates on, has coarse structure. With the coarse structure, the light is reflected in a random reflection direction, intensity of the light irradiating on a non-edge region ofthe laser device driving chip is reduced, and performance interference on a clock data recovery module of the non-edge region of the laser device chip is avoided.
Description
Technical field [0001] The present disclosure relates to the technical field of optical fiber communication, and in particular to an optical module. Background technique [0002] In the optical fiber communication system, the optical module is a connection module that plays the role of photoelectric conversion. A typical optical module usually includes a transmitting end and a receiving end. The transmitting end is used to convert electrical signals into optical signals and then transmitted through optical fibers, and the receiving end is used to convert optical signals transmitted by optical fibers into electrical signals. [0003] figure 1 It is a schematic diagram of the internal basic structure of an optical module. figure 2 for figure 1 Side view of the internal structure of the Zhongguang 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 laser 20, and the laser...
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IPC IPC(8): G02B6/42
CPCG02B6/4207
Inventor 刘旭霞钟岩
Owner HISENSE BROADBAND MULTIMEDIA TECH