Title:
TUNABLE OPTICAL FILTER
Document Type and Number:
WIPO Patent Application WO2004062053
Kind Code:
A3
Abstract:
A tunable filter having a resonator with a resonant frequency dependent upon a variable gap is provided. The variable gap may be controllably altered by use of an actuator. The resonator is a high Q resonator that may be formed by a ring resonator, microsphere, microdisc, or other high Q optical structures. Actuation is preferably achieved through an electrostatic actuator that moves a dielectric plate relative to the resonator in response to measured values of gap and temperature.
Inventors:
FRICK ROGER L
Application Number:
PCT/US2003/038626
Publication Date:
January 06, 2005
Filing Date:
December 04, 2003
Export Citation:
Assignee:
ROSEMOUNT INC (US)
International Classes:
G02B6/02; G02B6/12; G02B6/122; G02B6/26; H01S5/14; (IPC1-7): H01S5/14
Foreign References:
| US4686407A | 1987-08-11 |
Other References:
HEIMALA P ET AL: "THERMALLY TUNABLE INTEGRATED OPTICAL RING RESONATOR WITH POLY-SI THERMISTOR", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, vol. 14, no. 10, 1 October 1996 (1996-10-01), pages 2260 - 2267, XP000631527, ISSN: 0733-8724
TAO SHEN ET AL: "Tunable dielectric resonators with dielectric tuning disks in cylindrical enclosures", MICROWAVE SYMPOSIUM DIGEST. 2000 IEEE MTT-S INTERNATIONAL BOSTON, MA, USA 11-16 JUNE 2000, PISCATAWAY, NJ, USA,IEEE, US, 11 June 2000 (2000-06-11), pages 1441 - 1444, XP010507125, ISBN: 0-7803-5687-X
TAO SHEN ET AL: "Tunable dielectric resonators with dielectric tuning disks in cylindrical enclosures", MICROWAVE SYMPOSIUM DIGEST. 2000 IEEE MTT-S INTERNATIONAL BOSTON, MA, USA 11-16 JUNE 2000, PISCATAWAY, NJ, USA,IEEE, US, 11 June 2000 (2000-06-11), pages 1441 - 1444, XP010507125, ISBN: 0-7803-5687-X
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