Measurement of Raman gain spectrum in optical fiber

Details Measurement of Raman gain spectrum in optical fiber Measurement of Raman gain spectrum in optical fiber

1998-02-19

2000-06-27

Font, Frank G.

Optics: measuring and testing

For optical fiber or waveguide inspection

385122, G01N 2100

Patent

active

060813237

ABSTRACT:
An apparatus and method for measuring the spectral dependence of the Raman gain coefficient in optical fibers is presented. This approach measures the power level of Raman scattering in both a walk-off limited region and a physical fiber length limited region and, from these measurements, extracts the spectral dependence of the Raman gain coefficient. Access to these two regions is accomplished through control of the excitation pulse temporal width and relies on fiber dispersion to separate the excitation light from the Raman scattered light for short pulse widths. This approach measures the spectral dependence of the Raman gain without the necessity of absolute power measurement of the Raman scattered light, the need for a reference standard, or the need of a frequency tunable secondary optical source.

REFERENCES:
Stolen, et. al., "Raman Gain in Glass Optical Wave-guides," Applied Physics Letters, vol. 22, 6, pp. 276-278, Mar. 15, 1973.
Hellwarth, et. al., "Origin and Frequency Dependence of Nonlinear Susceptibilties of Glasses," Physics Review B vol. 11, pp. 964-967, Jan. 15, 1975.
daSilva, et. al., "Comparison of Raman Efficiencies in Optical Fibers," Optical Fiber Conference '94 Technical Digest, WK13, pp. 136 7 1994.

Affiliated with

Also associated with

Rating

Measurement of Raman gain spectrum in optical fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measurement of Raman gain spectrum in optical fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of Raman gain spectrum in optical fiber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1788857