发明名称 |
Optical modulation apparatus |
摘要 |
An optical modulation apparatus is provided which implements a stable amplifying function by reducing the effect of reflected light rays from end faces of a bidirectional optical amplifier by imposing a numerical limitation on the relationship between the gain of the bidirectional optical amplifier and the loss of the optical modulator, or by inserting a polarization rotation section in a reflection type optical modulator including the bidirectional optical amplifier or in a multi-wavelength collective optical modulation system combining the multiple optical modulators. An optical modulation apparatus is provided which implements a stable amplifying function and cost reduction by reducing the effect of reflected light rays by interposing optical isolators at every alternate SOAs in a transmission-type optical modulation apparatus including a plurality of semiconductor optical amplifiers (SOAs) connected in a multistage fashion.
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申请公布号 |
US2007127113(A1) |
申请公布日期 |
2007.06.07 |
申请号 |
US20070674576 |
申请日期 |
2007.02.13 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
FUJIWARA MASAMICHI;KANI JUNICHI;AKIMOTO KOJI;IWATSUKI KATSUMI |
分类号 |
H01S3/00;G02F1/01;H04B10/17;H04B10/26;H04J14/02 |
主分类号 |
H01S3/00 |
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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