发明名称 |
SELF-STIMULATION SIGNAL DETECTION IN AN OPTICAL TRANSMISSIONSYSTEM |
摘要 |
An optical transmission system comprises means for modulating the optical output of a laser of an optical amplifier module with a transmitted dither; means for measuring an incoming optical signal of the optical amplifier modu le for detecting a received dither; and means for processing the received dithe r and said transmitted dither for determining the ratio of the energy in the received dither to the energy in the transmitted dither. When the optical transmission system has a plurality of optical amplifiers, the optical outpu t of each optical amplifier is modulated with a respective transmitted dither which is uncorrelated to the dithers transmitted by the other optical amplifiers in the transmission system. A method for monitoring the performan ce of an optical transmission system is also disclosed, the method comprising t he steps of generating at an optical amplifier a transmitted dither of a known energy; measuring an incoming signal for detecting a received dither; and determining the ratio of energy in the received dither to the energy in the transmitted dither.
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申请公布号 |
CA2237604(C) |
申请公布日期 |
2001.10.09 |
申请号 |
CA19962237604 |
申请日期 |
1996.07.31 |
申请人 |
NORTHERN TELECOM LIMITED |
发明人 |
ROBERTS, KIM BYRON;O'SULLIVAN, MAURICE STEPHEN;WESLOWSKI, JEFFREY ALAN;HARLEY, JAMES |
分类号 |
H01S3/10;H04B10/02;H04B10/08;H04B10/16;H04B10/17;(IPC1-7):H04B10/00 |
主分类号 |
H01S3/10 |
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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