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11. 发明授权

US06282000B1 Optical transmitting and receiving module 失效
标题翻译：光发射和接收模块
公开(公告)号：US06282000B1
公开(公告)日：2001-08-28
申请号：US09127390
申请日：1998-07-31
申请人： Kimihiro Kikuchi , Yoshihiro Someno , Atsunori Hattori , Shoichi Kyoya
发明人： Kimihiro Kikuchi , Yoshihiro Someno , Atsunori Hattori , Shoichi Kyoya
IPC分类号： H04B1000
CPC分类号： G02B6/4246
摘要： In an optical transmitting and receiving module, a transmitting light beam having a wavelength &lgr;1 emitted from an light-emitting device passes through an optical demultiplexing filter and enters an optical fiber, and a receiving light beam emitted from an end face of the optical fiber is reflected from the optical demultiplexing filter and is incident on a light-receiving device. A cover for covering the front space of the optical demultiplexing filter is placed on a casing block, and a tongue piece serving as a returning-light preventing unit is formed on the cover. When a transmitting light beam emitted from the light-emitting device is reflected from the optical demultiplexing filter, the direction in which the reflected light advances is changed by the tongue piece so that the reflected light is not incident on the light-receiving device.
摘要翻译：在光发送接收模块中，从发光装置发射的具有波长lambd1的透射光束通过光解复用滤光器并进入光纤，从光纤的端面发射的接收光束为从光解复用滤波器反射并入射到光接收装置上。覆盖光解复用滤光器的前部空间的盖被放置在壳体块上，并且在盖上形成用作返回防光单元的舌片。当从发光装置发射的透射光束从光解复用滤光器反射时，反射光前进的方向被舌片改变，使得反射光不入射在光接收装置上。

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