发明名称 |
Optical transmission system |
摘要 |
In a wavelength division optical transmission system incorporating optical amplifiers, an identifying pilot tone is modulated on to each multiplexed wavelength. Each system amplifier determines from the pilot tones the total number of wavelengths being transmitted and thereby provides a corresponding adjustment of the amplifier gain. This prevents overamplification when one or more wavelengths is missing from the multiplexed signal e.g. as the result of a transmitter fault. |
申请公布号 |
GB2280561(B) |
申请公布日期 |
1997.03.26 |
申请号 |
GB19930015912 |
申请日期 |
1993.07.31 |
申请人 |
* NORTHERN TELECOM LIMITED |
发明人 |
RICHARD EDWARD * EPWORTH |
分类号 |
H04B10/17;H04J14/02;(IPC1-7):H04B10/16;H04B10/12 |
主分类号 |
H04B10/17 |
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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