Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1995-05-05
1998-03-03
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
G01N 2141, G01N 2184
Patent
active
057241260
ABSTRACT:
In the method of measuring a distribution of zero dispersion wavelengths in an optical fiber in a longitudinal direction, an optical pulse and a pump light are launched into the optical fiber. A gain generation portion of the optical fiber which indicates that the optical pulse power is amplified based on modulation instability induced by the pump light is detected from a back-scattered light waveform of the optical pulse indicative of an optical pulse power distribution in the longitudinal direction of the optical fiber. A zero dispersion wavelength of the gain generation portion of the optical fiber is determined from the pump light wavelength.
REFERENCES:
patent: 4633524 (1986-12-01), Hasegawa
patent: 5179420 (1993-01-01), So et al.
Nishi et al "Technique for measuring . . . modulation Instability" Electronics Letters vol. 31 No. 3, pp. 225-226, Feb. 2, 1995.
C. Lin et al., "Chromatic Dispersion Measurements in Single-Mode Fibers Using Picosecond in GaAsP Injection Lasers . . . ", The Bell System Technical Journal, Feb. 1983, vol. 62, No. 2, pp. 457-462.
P.J. Vella et al., "Measurement Of Chromatic Dispersion Of Long Spans Of Single-Mode Fibre: A Factory And Field Test Method", Electronics Letters, Feb. 16, 1984, vol. 20, No. 4, pp. 167-168.
Bruno Costa et al., "Phase Shift Technique for the Measurement of Chromatic Dispersion in Optical Fibers Using LED'S", IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, Oct. 1982, pp. 1509-1515.
M. Ohashi et al., "Novel Technique For Measuring Longitudinal Chromatic Dispersion Distribution In Singlemode Fibres", Electronics Letters, Mar. 4, 1993, vol. 29, No. 5, pp. 426-428.
M. Stern et al., "Soliton Technique to Characterize Single-Mode Fiber Dispersion", Journal of Lightwave Technology, Dec. 1992, vol. 10, No. 12, pp. 1777-1780.
Clemens Unger et al., "Determination Of The Inhomogeneity Of A Single-Mode Fiber Along Its Length By . . . ", Technical Digest Symp., 1994, pp. 65-68 .
Iwatsuki Katsumi
Nishi Shigendo
Saruwatari Masatoshi
Suzuki Ken-Ichi
McGraw Vincent P.
Nippon Telegraph and Telephone Corporation
LandOfFree
Method for measuring distribution of zero dispersion wavelengths does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for measuring distribution of zero dispersion wavelengths, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for measuring distribution of zero dispersion wavelengths will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2253345