Title:
ALL-FIBER PHASE-MODULATED FIBER OPTIC SENSOR AND PHASED ARRAY
Document Type and Number:
WIPO Patent Application WO/2018/075115
Kind Code:
A3
Abstract:
A fiber optical sensor and methods for sensing a physical quantity, such as rotation, using the same. The sensor has an optical fiber supporting propagation of light that is configured as an interferometer. One or more segments of the optical fiber, where the segments may be non-contiguous, are poled in such a manner that a phase shift in light propagating through the fiber is created in response to application of a voltage to an electrode thereby inducing an electric field across a poled segment of the fiber. A phase modulator comprising multiple poled segments is additionally described. Applying phase-shifting effects differentially across poled segments of optical fibers of an array of optical fibers may also allow for steering an optical beam.
Inventors:
LAINE JUHA-PEKKA J (US)
STONER RICHARD E (US)
SALTZMAN ADAM J (US)
MCCARTHY TIMOTHY J (US)
SMITH STEPHEN P (US)
STONER RICHARD E (US)
SALTZMAN ADAM J (US)
MCCARTHY TIMOTHY J (US)
SMITH STEPHEN P (US)
Application Number:
PCT/US2017/043599
Publication Date:
May 31, 2018
Filing Date:
July 25, 2017
Export Citation:
Assignee:
CHARLES STARK DRAPER LABORATORY INC (US)
International Classes:
G01D5/34; G01D5/353
Domestic Patent References:
| WO2015170355A1 | 2015-11-12 |
Foreign References:
| US6385354B1 | 2002-05-07 | |||
| US4929050A | 1990-05-29 | |||
| US4915503A | 1990-04-10 | |||
| US20020114059A1 | 2002-08-22 |
Other References:
FARRIES M C ET AL: "TUNABLE SECOND-ORDER SUSCEPTIBILITY GRATINGS FOR HARMONIC GENERATION IN OPTICAL FIBERS", OPTICAL FIBER COMMUNICATION CONFERENCE. NEW ORLEANS, 25 - 28 JAN., 1988; [OPTICAL FIBER COMMUNICATION CONFERENCE. (OFC)], NEW YORK, IEEE, US, vol. VOL. 1, no. 1988, 25 January 1988 (1988-01-25), XP000042763, ISBN: 978-1-55752-022-7
HUANG S ET AL: "Optical Kerr-effect in fiber-optic Brillouin ring laser gyroscopes", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 5, no. 3, 1 March 1993 (1993-03-01), pages 365 - 367, XP011410784, ISSN: 1041-1135, DOI: 10.1109/68.205640
HUANG S ET AL: "Optical Kerr-effect in fiber-optic Brillouin ring laser gyroscopes", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 5, no. 3, 1 March 1993 (1993-03-01), pages 365 - 367, XP011410784, ISSN: 1041-1135, DOI: 10.1109/68.205640
Attorney, Agent or Firm:
PETUCHOWSKI, Samuel J. et al. (US)
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