Enhancement of the coupling efficiency in optical fibers using a two-beam optical interference

Amara, M. Kamel; Melikechi, Noureddine
May 2002
Applied Physics Letters;5/13/2002, Vol. 80 Issue 19, p3494
Academic Journal
We report on an experimental technique, based on the launch of the central fringe of a two-beam interference pattern into an optical fiber that allows considerable enhancement of the coupling efficiency. Using helium–neon laser operating at 633 nm and a 3.3 μm wide fiber with a numerical aperture of 0.16, we have obtained a coupling efficiency of about 91%. © 2002 American Institute of Physics.


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