Abstract

We propose a method of aligning optical axes by monitoring reflected light from the core and the cladding at the coupling end. This method enables the simultaneous alignment of optical axes at multiple coupling ends because it is not necessary to monitor the transmitted light through the couplings. Experimental results show that this method can be used for coupling between cleaved single-mode fibers and between fibers with slant ends. The simultaneous alignment of two coupling ends is also achieved, and it is shown to obtain the optical power transmitted through the coupling, which is enough to begin the precise alignment. Moreover, we confirm fundamentally that one can use this method for precise alignment of optical axes by monitoring the optical beam profiles of the reflected light.

© 1997 Optical Society of America

Core alignments by a simple local monitoring method

Masayuki Fujise and Yoshinao Iwamoto
Appl. Opt. 23(15) 2643-2648 (1984)

Noncontact single-fiber-optic proximity sensor using a laser-fabricated tap

C. H. Lee and S. D. Allen
Appl. Opt. 36(10) 2217-2221 (1997)

Optical switching of a metal-clad waveguide with a ferroelectric liquid crystal

Masaya Mitsuishi, Shinzaburo Ito, Masahide Yamamoto, Thomas Fischer, and Wolfgang Knoll
Appl. Opt. 36(35) 9225-9229 (1997)

Alignment considerations in extrinsic fiber-optic sensors

A. K. Ghosh and P. K. Paul
Appl. Opt. 36(25) 6256-6263 (1997)

Accurate alignment of optical axes of a biplate using a spectroscopic Mueller matrix ellipsometer

Honggang Gu, Xiuguo Chen, Hao Jiang, Chuanwei Zhang, Weiqi Li, and Shiyuan Liu
Appl. Opt. 55(15) 3935-3941 (2016)