US 12,272,928 B2
Optical transmission module, optical transmission-reception module and optical module
Yi Tang, Shandong (CN); Jinlei Chen, Shandong (CN); Feng Cui, Shandong (CN); Yifan Xie, Shandong (CN); Qinhao Fu, Shandong (CN); and Lin Yu, Shandong (CN)
Assigned to HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD., Shandong (CN)
Filed by Hisense Broadband Multimedia Technologies Co., Ltd., Shandong (CN)
Filed on Mar. 31, 2021, as Appl. No. 17/219,200.
Application 17/219,200 is a continuation in part of application No. PCT/CN2020/074289, filed on Feb. 4, 2020.
Claims priority of application No. 201910193165.8 (CN), filed on Mar. 14, 2019; and application No. 201910440362.5 (CN), filed on May 24, 2019.
Prior Publication US 2021/0218217 A1, Jul. 15, 2021
Int. Cl. H01S 5/14 (2006.01); H04B 10/50 (2013.01)
CPC H01S 5/141 (2013.01) [H04B 10/505 (2013.01); H04B 10/506 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical transmission-reception module, comprising:
a top cover;
a base to which the top cover is fitted to form a cavity;
an optical reception device and an optical transmission device that are encapsulated in the cavity, and the optical transmission device including:
an optical waveguide substrate, wherein the optical waveguide substrate includes a surface, a first reflection inclined surface connected to the surface and second reflection inclined surfaces, an angle between the surface and the first reflection inclined surface is an acute angle, and a plane parallel to the surface and each second reflection inclined surface have an angle therebetween;
a plurality of laser assemblies disposed on the surface of the optical waveguide substrate, the laser assemblies being configured to emit laser beams towards the surface of the optical waveguide substrate;
an optical multiplexing assembly disposed in the optical waveguide substrate, the optical multiplexing assembly being configured to combine the laser beams emitted by the plurality of laser assemblies into a laser beam;
a plurality of main waveguides disposed inside the optical waveguide substrate, light inlet ends of the main waveguides facing the first reflection inclined surface, and light outlet ends of the main waveguides being communicated with the optical multiplexing assembly, wherein the first reflection inclined surface is configured to reflect the laser beams emitted by the laser assemblies to the main waveguides;
a plurality of power detectors disposed on the surface of the optical waveguide substrate, the power detectors being configured to detect power of the laser beams emitted by the laser assemblies, respectively; and
a plurality of secondary waveguides disposed inside the optical waveguide substrate, each secondary waveguide being communicated with a corresponding main waveguide, and configured to transmit a laser beam from the corresponding main waveguide to a corresponding second reflection inclined surface; wherein
each second reflection inclined surface is configured to reflect a received laser beam into a corresponding power detector; and
geometric centers of the main waveguides, geometric centers of the secondary waveguides, and a geometric center of the optical multiplexing assembly are located in a same plane parallel to the surface of the optical waveguide substrate;
an isolation rib located between the optical reception device and the optical transmission device, the optical reception device being disposed between the isolation rib and a side wall of the base, and the optical transmission device being disposed between the isolation rib and an opposite side wall of the base;
a fixing frame located in the cavity and perpendicular to the isolation rib, an end of the optical reception device and an end of the optical transmission device being in direct contact with the fixing frame, and another end of the optical reception device and another end of the optical transmission device being electrically connected to the circuit board; and
a protrusion extending from an inner wall of the top cover, and located at a side of the optical transmission device and the optical reception device that is away from the fixing frame.