Method of and apparatus for the measurement of the refractive-in

Details Method of and apparatus for the measurement of the refractive-in Method of and apparatus for the measurement of the refractive-in

1985-09-20

1987-05-12

Wan, Gene

Optics: measuring and testing

For optical fiber or waveguide inspection

35016212, G01N 2147, G02B 2742

Patent

active

046645160

ABSTRACT:
The refractive-index value is obtained by radially scanning a near-field image of the fiber output face and by computing, for each image point, the ratio between a first intensity value, obtained in the presence of a mask, having a transmissivity proportional to the fourth power of the transversal beam coordinate and located in a far-field plane, and a second intensity value, obtained in the absence of such a mask. An automated measurement apparatus for implementing the method is also provided.

REFERENCES:
patent: 4515475 (1985-05-01), Payne
Article entitled, "A New Technique for Measuring the Refractive Index Profiles of Graded Optical Fibers"-W. J. Stewart-pp. 395-398.
10th European Conference on Optical Communication-Sep. 3-6, 1984-Liederhalle Stuttgart, Federal Republic of Germany.
Fourth International Conference on Integrated Optics and Optical Fiber Communication, Jun. 27-30, 1983-pp. 38-39.
"Spot-Size Measurements in Single-Mode Fibres"-R. Caponi et al., pp. 37-40.

Affiliated with

Also associated with

Rating

Method of and apparatus for the measurement of the refractive-in 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 of and apparatus for the measurement of the refractive-in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for the measurement of the refractive-in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1798407