发明名称 |
Wavelength multiplexer and optical unit |
摘要 |
The subject to be attained by the disclosed technique is to provide an optical unit less expensive than conventional like optical units and having a wavelength multiplexer and optical waveguides.For achieving the above subject there is provided a wavelength multiplexer wherein a light combining/branching section is constituted by a multi-mode interference type optical waveguide, and an incident-side optical waveguide and a reflection-side optical waveguide are spaced a predetermined distance from each other at their connections to the multi-mode interference type optical waveguide. An optical filter is installed in the multi-mode interference type optical waveguide and a multi-mode interference is set so that a peak in a light intensity distribution is formed in the vicinity of an inlet of each of an exit-side optical waveguide and the reflection-side optical waveguide.
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申请公布号 |
US6744945(B2) |
申请公布日期 |
2004.06.01 |
申请号 |
US20020216843 |
申请日期 |
2002.08.13 |
申请人 |
HITACHI, LTD. |
发明人 |
KINOSHITA TAIRA;IDO TATEMI |
分类号 |
G02B6/12;G02B6/28;G02B6/293;G02B6/30;G02B6/34;G02B6/42;(IPC1-7):G02B6/28 |
主分类号 |
G02B6/12 |
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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