Title: Method and system for measuring light speed in short optical path using optic and electric signal phase difference
Application Number: 200610117324 Application Date: 2006.10.19
Publication Number: 1945245 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01J7/00
Applicant(s) Name: Shanghai Univ. Address:
Inventor(s) Name: Xue Lei;Li Xiangting
Attorney & Agent: hewen xin
Abstract:
    The present invention is optical and electric signal phase difference method and system for measuring light speed in a short optical path of 5 meter. The method includes splits one electric signal of high frequency f into two signals, including photoelectronic one transmitted through optical path of Ds and the other electric one transmitted through one cable in fixed length; multiplying the output electric signals separately with one electric signal with slightly lower frequency f
Time: 4
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