Invention Grant
- Patent Title: Low-noise fiber optic sensor utilizing a laser source
- Patent Title (中): 利用激光源的低噪声光纤传感器
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Application No.: US12271760Application Date: 2008-11-14
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Publication No.: US07911619B2Publication Date: 2011-03-22
- Inventor: Stéphane Blin , Michel J. F. Digonnet , Gordon S. Kino , Seth Lloyd
- Applicant: Stéphane Blin , Michel J. F. Digonnet , Gordon S. Kino , Seth Lloyd
- Applicant Address: US CA Palo Alto
- Assignee: The Board of Trustees of the Leland Stanford Junior University
- Current Assignee: The Board of Trustees of the Leland Stanford Junior University
- Current Assignee Address: US CA Palo Alto
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: G01C19/72
- IPC: G01C19/72

Abstract:
A fiber-optic sensor includes an optical fiber coil and a laser source optically coupled to the coil. Light from the source is transmitted to the coil as a first signal propagating along the coil in a first direction and a second signal propagating along the coil in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the coil to generate a third signal. The laser source is frequency-modulated or can have a coherence length longer than a length of the coil.
Public/Granted literature
- US20090195785A1 LOW-NOISE FIBER OPTIC SENSOR UTILIZING A LASER SOURCE Public/Granted day:2009-08-06
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