Downhole optical sensor system with reference

Details Downhole optical sensor system with reference Downhole optical sensor system with reference

2007-07-17

2007-07-17

Toatley, Jr., Gregory J. (Department: 2886)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

Reexamination Certificate

active

10693619

ABSTRACT:
Embodiments of the present invention generally provide methods, apparatus, and systems for compensating for frequency fluctuations in source light used to interrogate an optical sensor. The optical sensor may be interrogated to generate a sensor signal. A reference device co-located with the optical sensor may also be interrogated to generate a reference signal. Optical parameters extracted from the reference signal may be used to correct parameters extracted from a sensor signal.

REFERENCES:
patent: 5227857 (1993-07-01), Kersey
patent: 5721615 (1998-02-01), McBride et al.
patent: 6403949 (2002-06-01), Davis et al.
patent: 6522797 (2003-02-01), Siems et al.
Canadian Office Action, Application No. 2,485,030, dated Mar. 23, 2006.

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