Title:
TUNABLE OPTICAL STRUCTURE FEATURING FEEDBACK CONTROL
Document Type and Number:
WIPO Patent Application WO2001067045
Kind Code:
A3
Abstract:
A tunable optical device has a compression-tuned optical structure and a displacement sensor. The compression-tuned optical structure responds to an optical signal, and a displacement sensor signal, for providing a compression-tuned optical structure signal containing information about a change in an optical characteristic of the compression-tuned optical structure, and for providing an excitation caused by a change in a displacement of the compression-tuned optical structure. The displacement sensor responds to the excitation, for providing a displacement sensor signal containing information about the change in the displacement of the compression tuned optical structure. The compression-tuned optical structure is an all-glass compression unit shaped like a dogbone. The displacement sensor is a capacitance sensor affixed to the all-glass compression unit for measuring capacitance between two parallel and opposing plates.
Inventors:
PUTNAM MARTIN A
BRUCATO ROBERT N
DAVIS MICHAEL A
BELLEMORE DAVID G
HELM WALTER A
BRUCATO ROBERT N
DAVIS MICHAEL A
BELLEMORE DAVID G
HELM WALTER A
Application Number:
PCT/US2001/007369
Publication Date:
February 28, 2002
Filing Date:
March 06, 2001
Export Citation:
Assignee:
CIDRA CORP (US)
International Classes:
G01D5/353; G02B6/02; G02F1/01; (IPC1-7): G01D5/353; G02F1/01
Foreign References:
| US4387601A | 1983-06-14 |
Other References:
IOCCO A ET AL: "BRAGG GRATING FAST TUNABLE FILTER FOR WAVELENGTH DIVISION MULTIPLEXING", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, vol. 17, no. 7, July 1999 (1999-07-01), pages 1217 - 1221, XP000898384, ISSN: 0733-8724
BALL G A ET AL: "COMPRESSION-TUNED SINGLE-FREQUENCY BRAGG GRATING FIBER LASER", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, US, vol. 19, no. 23, 1 December 1994 (1994-12-01), pages 1979 - 1981, XP000484576, ISSN: 0146-9592
BALL G A ET AL: "COMPRESSION-TUNED SINGLE-FREQUENCY BRAGG GRATING FIBER LASER", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, US, vol. 19, no. 23, 1 December 1994 (1994-12-01), pages 1979 - 1981, XP000484576, ISSN: 0146-9592
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