发明名称 |
Optical fiber temperature distribution measurement device and method of measuring optical fiber temperature distribution |
摘要 |
An optical fiber temperature distribution measurement device for measuring a temperature distribution along a longitudinal direction of an optical fiber is provided. The device includes: a light transmitter configured to input a train of code-modulated light pulses into the optical fiber; a light receiver configured to receive Raman back scattering lights generated by inputting the train of code-modulated light pulses into the optical fiber; a demodulator configured to perform a correlation processing between a measured signal output from the light receiver and a code string associated with a type of the code modulation performed by the light transmitter, and to demodulate the measured signal; a storage storing a correction data to be used to correct a distortion of the measured signal output from the light receiver when an impulsive pulsed light is output from the light transmitter; and a corrector configured to perform a correction to one of the measured signal output from the light receiver and a demodulated signal output from the demodulator, using the correction data stored in the storage. |
申请公布号 |
EP2775278(A2) |
申请公布日期 |
2014.09.10 |
申请号 |
EP20140156237 |
申请日期 |
2014.02.21 |
申请人 |
YOKOGAWA ELECTRIC CORPORATION |
发明人 |
SHIDA, HIDEO;OISHI, KAZUSHI |
分类号 |
G01K11/32 |
主分类号 |
G01K11/32 |
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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