Abstract
An adjustable access coupler for multimode fiber-optic networks has been constructed, based on the voltage-tunable total-internal-reflection effect in nematic liquid crystals. Fibers are coupled via graded-index rod lenses at normal incidence to flint-glass prisms in contact with a 6-μm liquid-crystal layer. The achromatic four-port switch has a 1.6-dB optical insertion loss, a tap ratio controllable from −4.6 to −48 dB, a directionality of 44 dB, and an operating voltage of 5 to 20 V rms.
© 1979 Optical Society of America
Full Article | PDF ArticleMore Like This
R. A. Soref and D. H. McMahon
Opt. Lett. 5(4) 147-149 (1980)
Masahiro Nunoshita, Yoshinori Nomura, Teruhito Matsui, and Takashi Nakayama
Opt. Lett. 4(1) 27-28 (1979)
Larry R. McAdams, Robert N. McRuer, and Joseph W. Goodman
Appl. Opt. 29(9) 1304-1307 (1990)