Seven fibers of different cross‐sectional shape are studied interferometrically using multiple‐beam Fizeau fringes. These fibers are of circular, rectangular, triangular, trilobal, elliptical, kidney, and dog‐bone cross‐sectional shapes. The areas enclosed under the interference fringe shift is considered to represent the optical path difference integrated across the fiber. This principal is applied to nylon 6 fibers of trilobal cross‐sectional shape. The described method is suitable for the measurement of refractive indices of any fiber with regular or irregular transverse sections. Microinterferograms are given for illustration.
REFERENCES
1.
2.
3.
4.
5.
6.
H. A.
El‐Hennawi
, F.
El‐Diasty
, and O.
Meshrif
, J. Appl. Phys.
62
, 4931
(1987
).7.
8.
9.
I. M.
Fouda
and M. M.
El‐Nicklawy
, J. Mater. Sci. Lett.
7
, 1136
(1988
).10.
I. M.
Fouda
, M. M.
El‐Nicklawy
, and K. A.
El‐Farahaty
, Acta Phys. Polon. A
64
, 577
(1983
).11.
12.
I. M.
Fouda
, T.
El‐Dessouki
, and K. A.
El‐Farahaty
, Acta Phys. Polon. A
70
, 177
(1986
).13.
14.
A. A.
Hamza
, T. Z. N.
Sokkar
, and M. A.
Kabeel
, J. Phys. D
18
, 1773
(1985
).15.
A. A.
Hamza
, T. Z. N.
Sokkar
, and M. A.
Kabeel
, J. Phys. D
19
, L19
(1986
).
This content is only available via PDF.
© 1990 American Institute of Physics.
1990
American Institute of Physics
You do not currently have access to this content.
