发明名称 |
OPTICAL MULTIPLEXER AND DEMULTIPLEXER |
摘要 |
<p>An optical multiplexer and/or optical demultiplexer for multiplexing and/or demultiplexing a plurality of wavelengths comprises a plurality of optical filter each of which transmits a predetermined wavelength and reflects other wavelengths, said optical filters being arranged so that an optical beam is transmitted or reflected via each optical filter in sequence in a zigzag fashion. A light source or light detector is provided behind each optical filter to project or receive a collimated optical beam. The angle of incidence when a beam is applied to an optical filter is small. And, another optical means is provided to connect the present optical multiplexer and/or demultiplexer with an outside optical fiber. The transmission wavelength of each optical filter is different from the others.</p> |
申请公布号 |
CA1126421(A) |
申请公布日期 |
1982.06.22 |
申请号 |
CA19790319999 |
申请日期 |
1979.01.19 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE PUBLIC CORPORATION |
发明人 |
NOSU, KIYOSHI;ISHIO, HIDEKI;MIKI, TETSUYA |
分类号 |
G02B6/293;G02B6/34;G02B27/10;H04J14/02;(IPC1-7):04B9/00;04J1/00 |
主分类号 |
G02B6/293 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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