发明名称 |
Method of measuring the noise level in the presence of a signal |
摘要 |
A method and apparatus for measuring the noise level in an optical amplifier in the presence of a signal at a signal wavelength. The signal is detuned to a second wavelength different from the signal wavelength. A difference function corresponding to the difference in noise levels before and after detuning of the signal as a function of wavelength is determined. The noise level at the signal wavelength is measured. The value of the difference function at the signal wavelength is added to the noise level measured in the previous step.
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申请公布号 |
US5696707(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19950419999 |
申请日期 |
1995.04.10 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
HENTSCHEL, CHRISTIAN;MUELLER, EMMERICH;RUECK, CLEMENS;LECKEL, EDGAR |
分类号 |
G01J3/28;G01M11/00;G02F1/35;H01S3/00;H04B10/08;H04B10/17;(IPC1-7):H01S3/00 |
主分类号 |
G01J3/28 |
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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