Optical waveguides – Optical waveguide sensor
Reexamination Certificate
2006-11-28
2006-11-28
Pak, Sung (Department: 2874)
Optical waveguides
Optical waveguide sensor
C398S013000, C398S020000
Reexamination Certificate
active
07142736
ABSTRACT:
Polarization effects are managed to provide differential timing information for localizing disturbances affecting two or more counter-propagating light signals on one or more optical waveguides passing through a detection zone. Activity can be localized to a point for a security perimeter. Events causing optical disturbance can be mapped to points along a straight line, a perimeter or arbitrary pattern or an array. Events cause local changes in optical properties in the optical waveguide, in particular an optical fiber. Short term local changes are distinguishable from phase changes of light travel in the waveguide by managing the polarization state of input and output beams.
REFERENCES:
patent: 4897543 (1990-01-01), Kersey
patent: 6194707 (2001-02-01), Yang
patent: 6621947 (2003-09-01), Tapanes et al.
patent: 6721502 (2004-04-01), Al-Salameh et al.
patent: 6778717 (2004-08-01), Tapanes et al.
patent: 6897424 (2005-05-01), Suzuki
patent: 2004/0047628 (2004-03-01), Passier et al.
patent: 1 497 995 (1978-01-01), None
Anthony Dandridge and Alan D. Kersey, “Overview of Mach-Zehnder Sensor Technology and Applications,” Fiber Optic and Laser Sensors VI, Proc. SPIE vol. 985, pp. 34-52 (1988).
Bogdan Kizlik, “Fiber Optic Distributed Sensor in Mach-Zehnder Interforometer Configuration,” TCSET2002 Lviv- Slavsko, Ukraine.
Moshe Tur, Yuval S. Boger, and H.J. Shaw, “Polarization-Induced Fading in Fiber-Optic Sensor Arrays,” Journal of Lightwave Technology, vol. 13, No. 7, p. 1269-1276, Jul. 1995.
Alan D. Kersey, Michael J. Marrone, and Anthony Dandridge, “Analysis of Input-Polarization-Induced Phase Noise in Interferometric Fider-Optic Sensors and Its Reduction Using Polarization Scrambling,” Journal of Lightwave Technology, vol. 8, No. 6, Jun. 1990.
David W. Stowe, Douglas R. Moore and Richard G. Priest, “Polarization Fading in Fiber Interferometric Sensors,” IEEE Journal of Quantum Electronics, vol. QE-18, Nov. 10, Oct. 1982.
Patel Jayantilal S.
Zadorozhny Yuri
Zhuang Zhizhong
Duane Morris LLP
Optellios, Inc.
Pak Sung
LandOfFree
Distributed fiber sensor with interference detection and... 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 with interference detection and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed fiber sensor with interference detection and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3638313