发明名称 |
Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied |
摘要 |
An optical amplifier which amplifies a wavelength division multiplexed (WDM) optical signal having a variable number of channels associated with different wavelengths and outputs the amplified WDM optical signal. The optical amplifier includes (a) an optical attenuator which controls a level of the amplified WDM optical signal, and (b) a controller which controls the WDM optical signal to be amplified with an approximately constant gain. |
申请公布号 |
US7227681(B2) |
申请公布日期 |
2007.06.05 |
申请号 |
US20040956107 |
申请日期 |
2004.10.04 |
申请人 |
FUJITSU LIMITED |
发明人 |
SUGAYA YASUSHI;KINOSHITA SUSUMU |
分类号 |
H01S3/00;H01S3/10;G02B6/06;H01S3/06;H01S3/067;H01S3/13;H04B10/16;H04B10/17;H04B10/18;H04J14/00;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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