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公开(公告)号：US5838859A
公开(公告)日：1998-11-17
申请号：US756220
申请日：1996-11-25
Applicant: Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
Inventor： Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
CPC classification number: G02B6/4246 , G02B6/4207
Abstract: An optical transceiver assembly for use in a bidirectional system includes a beam splitter to direct an incoming signal to a photodiode. An outgoing signal from a laser diode is partially transmitted and partially reflected by the splitter. The reflected signal, which may reach the photodiode, constitutes crosstalk which is reduced by orienting the polarization direction of the splitter essentially parallel to that of the outgoing signal from the laser diode. In another embodiment, which enhances coupling efficiency, a single element asphere lens is positioned between the laser diode and the splitter.
Abstract translation: 用于双向系统的光收发器组件包括用于将输入信号引导到光电二极管的分束器。 来自激光二极管的输出信号被部分地传输并且被分离器部分地反射。 可能到达光电二极管的反射信号构成串扰，其通过使分离器的偏振方向基本上与来自激光二极管的输出信号的偏振方向平行而被减小。 在提高耦合效率的另一实施例中，单个元件非球面透镜位于激光二极管和分离器之间。
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公开(公告)号：US5867622A
公开(公告)日：1999-02-02
申请号：US892824
申请日：1997-07-15
Applicant: Masahiro Miyasaka , Shigemasa Enoeda , Toshimichi Yasuda , Noritane Kimoto
Inventor： Masahiro Miyasaka , Shigemasa Enoeda , Toshimichi Yasuda , Noritane Kimoto
CPC classification number: G02B6/29361 , G02B6/2937 , G02B6/32 , G02B6/4246 , G02B6/4208
Abstract: Bi-directional and uni-directional optical communication and transmission modules minimize crosstalk during use by diffusing reflected and returned stray light. A bi-directional module includes a transmission optical element for transmitting light into the module, a reception optical element for receiving light in the module, an optical fiber for guiding light to and from the transmission and reception optical elements, respectively, a beam splitter for allotting light received from the transmission optical element and the optical fiber, and a light non-return chamber for receiving and diffusing stray light reflected by the beam splitter from the transmission optical element and the optical fiber. A uni-directional module includes a light non-return chamber for receiving and diffusing return light reflected by a beam splitter from at least one optical device arranged in the module. In other aspects of the invention, a variety of optical modules are provided wherein component parts are either aligned along a central axis of a through-hole of the module, are adjustable to maintain an optimum optical axis for light transmission through the module, or are arranged to mutually correct for the axial shift of light in any given component to minimize the total axial shift of light entering and exiting the module.
Abstract translation: 双向和单向光通信和传输模块通过扩散反射和返回的杂散光来最大限度地减少使用期间的串扰。 双向模块包括用于将光传输到模块中的传输光学元件，用于在模块中接收光的接收光学元件，用于将光引导到发射和接收光学元件的光纤，分别用于 分配从透射光学元件和光纤接收的光;以及光反射室，用于从透射光学元件和光纤接收和扩散由分束器反射的杂散光。 单向模块包括光反射室，用于从布置在模块中的至少一个光学装置接收并扩散由分束器反射的返回光。 在本发明的其他方面，提供了各种光学模块，其中组件部分沿着模块的通孔的中心轴线对准，可调节以保持通过模块的光透射的最佳光轴，或者是 布置成相互校正任何给定部件中的光的轴向偏移，以最小化进入和离开模块的光的总轴向偏移。
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公开(公告)号：US6075635A
公开(公告)日：2000-06-13
申请号：US923200
申请日：1997-09-04
Applicant: Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
Inventor： Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
CPC classification number: G02B6/4246 , G02B6/4207
Abstract: An optical transceiver assembly for use in a bidirectional system includes an optical fiber to which an outgoing optical signal is coupled. To reduce reflections from the end face of the fiber, the end face is beveled at an acute angle .phi.' to the normal to the fiber axis, and the fiber axis is tilted at an acute angle .theta. to the transmission axis. Preferably, .phi.'.apprxeq.2.theta.. In this manner, crosstalk is reduced without significantly sacrificing coupling efficiency.
Abstract translation: 用于双向系统的光收发器组件包括耦合出射光信号的光纤。 为了减少从纤维端面的反射，端面以与光纤轴垂直的锐角角度倾斜，并且光纤轴以透角轴倾斜为锐角θ。 优选地，phi'APPROX2θ。 以这种方式，减少串扰而不显着牺牲耦合效率。
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公开(公告)号：US5796899A
公开(公告)日：1998-08-18
申请号：US755635
申请日：1996-11-25
Applicant: Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
Inventor： Timothy Butrie , Shigemasa Enoeda , Joseph Edward Riska , Stephen James Salko , Thomas Stanley Stakelon , Alka Swanson , Toshimichi Yasuda
CPC classification number: G02B6/4246 , G02B6/4207
Abstract: An optical transceiver assembly for use in a bidirectional system includes a beam splitter to direct an incoming signal to a photodiode. An outgoing signal from a laser diode is partially transmitted and partially reflected by the splitter. The reflected signal, which may reach the photodiode, constitutes crosstalk which is reduced by means of a cavity positioned to receive the reflected signal and an oblique surface within the cavity adapted to prevent much of the reflected signal from reaching the photodiode.
Abstract translation: 用于双向系统的光收发器组件包括用于将输入信号引导到光电二极管的分束器。 来自激光二极管的输出信号被部分地传输并且被分离器部分地反射。 可能到达光电二极管的反射信号构成串扰，其通过被定位成接收反射信号的空腔而减小，并且腔内的倾斜表面适于防止大部分反射信号到达光电二极管。
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