发明名称 |
Wavelength dispersion measuring device and method |
摘要 |
A signal having a low frequency fm is superposed on a signal having a high frequency f1. The light having the frequency fs is modulated and transmitted to a transmission line as a wavelength dispersion measurement light. A local oscillation light is multiplexed with the wavelength dispersion measurement light, and heterodyne-detected on a receiving side. Sideband components generated by modulating the frequency fs within the heterodyne-detected wavelength dispersion measurement light are extracted by bandpass filters, and the wavelength dispersion value of the transmission line is calculated by detecting the phase difference between the sideband components. <IMAGE> |
申请公布号 |
EP1179728(A3) |
申请公布日期 |
2003.08.20 |
申请号 |
EP20010104531 |
申请日期 |
2001.03.02 |
申请人 |
FUJITSU LIMITED |
发明人 |
IBUKURO, SADAO;ISHIKAWA, GEORGE |
分类号 |
G01J9/04;G01M11/00;G01M11/02;G02F2/00 |
主分类号 |
G01J9/04 |
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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