Invention Grant
- Patent Title: Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive system
- Patent Title (中): 光耦合/分离装置，双向光传播装置和光发射接收系统
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Application No.: US14240582Application Date: 2012-09-27
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Publication No.: US09306670B2Publication Date: 2016-04-05
- Inventor: Masamichi Fujiwara , Kenichi Suzuki , Naoto Yoshimoto , Manabu Oguma , Toshio Watanabe , Hiroshi Takahashi , Hiromasa Tanobe , Tsutomu Kitoh
- Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- Applicant Address: JP Tokyo
- Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee: Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2011-211314 20110927; JP2011-211316 20110927; JP2011-211318 20110927
- International Application: PCT/JP2012/006196 WO 20120927
- International Announcement: WO2013/046696 WO 20130404
- Main IPC: H04B10/27
- IPC: H04B10/27 ; H04B10/272 ; H04J14/02 ; G02B6/28 ; G02B6/42 ; G02B6/02 ; G02B6/036 ; G02B6/125 ; G02B6/30 ; G02B6/028 ; G02B6/12 ; G02B6/14
Abstract:
The present invention relates to an optical coupling/splitting device that realizes the splitting of a down-signal and the coupling of up-signals by the same optical device, and reduces coupling losses of the up-signal. An optical coupling/splitting device in the present invention comprises an optical coupling/splitting means for coupling a plurality of up-signals in a multi-mode for output and splitting a down-signal in a single mode for output, and a two-way optical propagation means for propagating the up-signal that is output from the optical coupling/splitting means in a multi-mode for output and propagate the down-signal in a single mode to be output to the optical coupling/splitting means.
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