Apparatus and method for measuring refractive index

Details Apparatus and method for measuring refractive index Apparatus and method for measuring refractive index

1993-03-12

1994-11-15

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356128, G01N 2145

Patent

active

053653297

ABSTRACT:
A method of sensing optically properties of an approximately cylindrical object, such as an optical fibre or optical fibre preform, which diffracts the illuminating beam into a plurality of beam portions each corresponding to its respective diffraction order, comprising the steps of illuminating the object with an illuminating beam substantially perpendicular to the axis of the object, moving an aperture so as to discriminate a beam portion exiting from the object and corresponding to a selected diffraction order, and detecting said beam portion.

REFERENCES:
patent: 4181433 (1980-01-01), Marcuse
patent: 4441811 (1984-04-01), Melezoglu et al.
Sasaki et al., "Measurement of Refractive-Index Profiles in Optical-Fiber Preforms by Spatial-Filtering Techniques" Electronics Letters, 13 Mar. 1980, vol. 16 #6, pp. 219-221.
Watkins "Laser beam refraction traversely through a grated-index preform to determine refractive index ratio and gradient profile" Applied Optics vol. 18, #13, 1 Jul. 1979 pp. 2214-2222.

Affiliated with

Also associated with

Rating

Apparatus and method for measuring refractive index does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for measuring refractive index, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for measuring refractive index will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1101556