发明名称 |
Optical fiber chromatic dispersion distribution measuring apparatus and measuring method |
摘要 |
An optical fiber chromatic dispersion distribution measuring apparatus for measuring the chromatic dispersion distribution of an optical fiber under test comprising two light sources at least one of which can change wavelength thereof, wherein light beams having different wavelengths from each other and emitted from the two light sources are inputted to the optical fiber under test to measure a four-wave mixing light beam generated by interaction between the two light beams by optical time domain reflectometer (OTDR); wherein an optical bandpass filter having a fixed center wavelength is provided at a previous stage of the optical time domain reflectometer (OTDR); and wherein a coherence controller for controlling coherence of at least one of the light beams outputted from the two light sources.
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申请公布号 |
US6819473(B2) |
申请公布日期 |
2004.11.16 |
申请号 |
US20010997969 |
申请日期 |
2001.11.29 |
申请人 |
ANDO ELECTRIC CO., LTD. |
发明人 |
AOKI SHOICHI;NAGASHIMA SINYA |
分类号 |
G01M11/02;G01M11/00;(IPC1-7):G02F1/365;G01N21/63;G01B9/02 |
主分类号 |
G01M11/02 |
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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