Distributed fiber sensor based on spontaneous brilluoin...

Optics: measuring and testing – Material strain analysis – By light interference detector

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C356S477000, C356S484000

Reexamination Certificate

active

10874826

ABSTRACT:
A distributed fiber sensor based on spontaneous Brillouin scattering uses a single-frequency fiber laser as a source and a cw Brillouin fiber ring laser as an OLO to optically shift the frequency of the OLO to set the Brillouin/OLO beat frequency within the bandwidth of a conventional heterodyne receiver. The distributed fiber sensor is capable of real-time measurement of both temperature and strain.

REFERENCES:
patent: 4107628 (1978-08-01), Hill et al.
patent: 4530097 (1985-07-01), Stokes et al.
patent: 5170457 (1992-12-01), Jen
patent: 5323415 (1994-06-01), Quast et al.
patent: 5825804 (1998-10-01), Sai
patent: 2 243 210 (1991-10-01), None
patent: WO 02/093120 (2002-11-01), None
H. Izumita et al., Brillouin OTDR Employing Optical Frequency Shifter Using Side-Band Generation Technique with High-Speed LN Phase-Modulator, IEEE Photonics Technology Letters, vol. 8, No. 12, Dec. 1996, pp. 1674-1676.
V. Lecoeuche et al., 20-km Distributed Temperature Sensor Based on Spontaneous Brillouin Scattering, IEEE Photonics Technology Letters, vol. 12, No. 10; Oct. 2000, pp. 1367-1369.
V. Lecoeuche et al., Brillouin based distributed fibre sensor incorporating a mode-locked Brillouin fibre ring laser, Optics Communications 152, Jul. 1, 1998, pp. 263-268.
V. Lecoeuche et al., 25 km Brillouin based single-ended distributed fibre sensor for theshold detection of temperature or strain, Optics Communications 168, Sep. 1, 1999, pp. 95-102.
Ch. Spiegelberg et al., Compact 100 mW fiber laser with 2 kHz linewidth, PD45-1, Optical Fiber Conference 2003.
M. Nikles et al., Simple distributed fiber sensor based on Brillouin gain spectrum analysis, Optics Letters, vol. 21, No. 10, May 15, 1996, pp. 758-760.
J. Robert et al., Potential of Simulated Brillouin Scattering as Sensing Mechanism for Distributed Temperature Sensors, Electronic Letters, Jul. 6, 1989, vol. 25, No. 14, p. 916.
T. Horiguchi et al., Tensile Strain Dependence of Brillouin Frequency Shift in Silica Optical Fibers, IEEE Photonics Technology Letters, vol. 1, No. 5, May 1989, pp. 107-108.
P.C. Wait, Spontaneous Brillouin-Based Distributed Temperature Sensor Utilizing a Fiber Bragg Grating Notch Filter for the Separation of the Brillouin Signal, IEEE Photonics Technology Letters, vol. 13, No. 5, May 2001, pp. 508-510.
K. Hotate, Distributed Dynamic Strain Measurement Using a Correlation-Based Brillouin Sensing System, IEEE Photonics Technology Letters, vol. 15, No. 2, Feb. 2003, pp. 272-274.
T.R. Parker et al., Simultaneous Distributed Measurements of Strain and Temperature from Noise Initiated Brillouin Scattering in Optical Fibers, IEEE Journal of Quantum Electronics, vol. 34, No. 4, Apr 1998, pp. 645-659.
C. Spiegelberg et al., Low-Noise Narrow-Linewidth Fiber Laser at 1550 nm (Jun. 2003), Journal of Lightwave Technology, vol. 22, No. 1, Jan. 2004, pp. 57-62.
S. Maughan et al., 57-km single-ended spontaneous Brillouin-based distrbuted fiber temperature sensor using microwave coherent detection, Optics Letters, Mar. 15, 2001, vol. 26, No. 6, pp. 331-333.
X. Bao et al., Experimental and Theoretical Studies on a Distributed Temperature Sensor Based on Brillouin Scattering, Journal of Lightwave Technology, vol. 13, No. 7, Jul. 1995, pp. 1340-1348.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Distributed fiber sensor based on spontaneous brilluoin... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distributed fiber sensor based on spontaneous brilluoin..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed fiber sensor based on spontaneous brilluoin... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3894774

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.