Abstract

Spatial distribution of optical phase and amplitude can be measured by using a single-mode optical-fiber interferometric system. Following the first proposal of the measuring principle by the present authors in 1978, a further development of the measuring system is now reported. The major achievement is the use of a novel spatial filter and a set of photodetectors by which the interference fringe position is located. Combining them with analog signal-processing circuitry and with a mechanical feedback system, fully automated recording of the optical phase and amplitude distribution is successfully achieved. The method is used to measure phase-front distribution near a Gaussian beam waist.

© 1981 Optical Society of America

Optical field mapping using single-mode optical fibers

Michitomo Iiyama, Takeshi Kamiya, and Hisayoshi Yanai
Appl. Opt. 17(12) 1965-1971 (1978)

Integral phase modulation properties of a single-mode optical fiber subjected to controlled vibration

C. Liguori and M. Martinelli
Appl. Opt. 20(24) 4319-4323 (1981)

Characterization of single-mode optical fiber filters

D. K. W. Lam and B. K. Garside
Appl. Opt. 20(3) 440-445 (1981)

Accurate laser wavelength measurement with a precision two-beam scanning Michelson interferometer

J.-P. Monchalin, M. J. Kelly, J. E. Thomas, N. A. Kurnit, A. Szöke, F. Zernike, P. H. Lee, and A. Javan
Appl. Opt. 20(5) 736-757 (1981)

Distributed coupling on polished single-mode optical fibers

O. Parriaux, S. Gidon, and A. A. Kuznetsov
Appl. Opt. 20(14) 2420-2423 (1981)