发明名称 |
OPTICAL WAVELENGTH FILTER DEVICE |
摘要 |
An optical wavelength filter device capable of increasing the number of channels by narrowing a line width and widening a tuning width and comprising a first optical wavelength filter of a mode conversion type and a second optical wavelength filter of an interferometer type optically coupled with the first optical wavelength filter.
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申请公布号 |
US5189714(A) |
申请公布日期 |
1993.02.23 |
申请号 |
US19910767110 |
申请日期 |
1991.09.27 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
OKAYAMA, HIDEAKI;USHIKUBO, TAKASHI |
分类号 |
G02F1/29;G02F1/313;H01S3/1055;H01S5/10;H01S5/50;H04J14/04 |
主分类号 |
G02F1/29 |
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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