Process for preparing an optical fiber sensor with enhanced sens

Details Process for preparing an optical fiber sensor with enhanced sens Process for preparing an optical fiber sensor with enhanced sens

1998-03-16

2000-03-07

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

385 12, G02B 634

Patent

active

060350822

ABSTRACT:
A process for preparing an optical fiber having at least one long period grating with enhanced sensitivity is provided. A length of optical fiber having a refractive index profile is provided. The optical fiber supports a core mode and cladding modes for a range of operational wavelengths. Group indices are identified for the core mode and the cladding modes for a specific wavelength wherein the group indices are equal to each other. A long period grating is written in the optical fiber. The long period grating has a grating defined by the group indices and it couples light from the core mode to a cladding mode proximate to where the group indices are equal. The optical fibers prepared by the present invention may be used for measuring an environmental perturbation where high sensitivity is required.

REFERENCES:
patent: 4691991 (1987-09-01), Unger
patent: 5641956 (1997-06-01), Vengsarkar et al.
Byeong Ha Lee, Yu Lee, Sang Bae Lee, Sang Sam Choi, Joo Nyung Jang, "Displacements of the Resonant Peaks of a Long-Period Fiber Grating Induced by a Change of Ambient Refractive Index," Optics Letters, Jul. 23, 1997, pp. 1769-1771, vol. 22, No. 23, Optical Society of America, U.S.A.
Ashish M. Vengsarkar, Paul J. Lemaire, Justing B. Judkins, Vikram Bhatia, Turan Erdogan, J.E. Sipe, "Long-Period Fiber Gratings as Band-Rejection Filters," Journal of Lightwave Technology, Jan. 1996, pp. 58-65, vol. 14, No. 1, IEEE, U.S.A.
A.M. Vengsarkar, P.J. Lemaire, G. Jacobovitz-Veselka, J.B. Judkins, V. Bhatia, T. Erdogan, J.E. Sipe, "Long-Period Cladding-Mode-Coupled Fiber Gratings: Properties and Applications," 1995 Technical Digest Series, Sep. 9-11, 1995, pp. SaB2-1-SaB2-4, vol. 22, Optical Society of America, Portland, Oregon.
Alan D. Kersey, Michael A. Davis, Heather J. Patrick, Michel Leblanc, K.P. Koo, C.G. Askins, M.A. Putnam, E. Joseph Friebele, "Fiber Grating Sensors," Journal of Lightwave Technology, May 5, 1997, pp. 1442,1455-1457, vol. 15, No. 8, IEEE, U.S.A.
Vikram Bhatia, David K. Campbell, Daniel Sherr, Tiffanie G. D'Alberto, Noel A. Zabaronick, Gregory A. Ten Eyck, Kent A. Murphy, Richard O. Claus, "Temperature-Insensitive and Strain-Insensitive Long-Period Grating Sensors for Smart Structures," Optical Engineering, Feb. 18, 1997, vol. 26, No. 7, Society of Photo-Optical Instrumentation Engineers, U.S.A.
Zheng Zhang, James S. Sirkis, "Temperature-Compensated Long Period Grating Chemical Sensor," Technical Digest Series, Oct. 28-31, 1997, pp. 294-297, vol. 16, Optical Society of America, U.S.A.
H.Y. Tam, W.Du, "Simple Method for Enhancing Fiber Grating's Bragg Wavelength Shift," SPIE, Oct. 11, 1996, pp. 300-304, vol. 2895.

Affiliated with

Also associated with

Rating

Process for preparing an optical fiber sensor with enhanced sens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing an optical fiber sensor with enhanced sens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing an optical fiber sensor with enhanced sens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-370369