Abstract

Fraunhofer holograms and their reconstructions show interference fringes when applied to tapered glass fibers, which do not occur with opaque fibers. The fringes are shown to be quantitatively related to fiber profile. The phase lag of fiber transmitted light is recorded as identifiable hologram fringes by interference with fiber-diffracted light. This also results in fringes in the reconstructed image. One fringe of both types, for a fiber refractive index n, represents a diameter change λ/(n − 1). Shape changes along a fiber not directly resolved by the optics are measurable. Profile measurement of attenuating glass fibers in the continuous filament process is described.

© 1969 Optical Society of America

Image Reconstruction from a Fraunhofer X-Ray Hologram with Visible Light*

John W. Giles
J. Opt. Soc. Am. 59(9) 1179-1188 (1969)

Image Reconstruction with Fraunhofer Holograms*

John B. DeVelis, George B. Parrent, and Brian J. Thompson
J. Opt. Soc. Am. 56(4) 423-427 (1966)

Two-Dimensional Spatial Frequency Analysis of the Fraunhofer Hologram of a Small Opaque Sphere

F. M. Shofner, T. G. Russell, and R. Menzel
Appl. Opt. 8(10) 2043-2046 (1969)

Acoustical Holograms Using Phase Information Only

Lewis Larmore, H. M. A. El-Sum, and A. F. Metherell
Appl. Opt. 8(8) 1533-1536 (1969)

Effects of Photographic Gamma on Hologram Reconstructions*†

James C. Wyant and M. Parker Givens
J. Opt. Soc. Am. 59(12) 1650-1658 (1969)