Construction and characterization of an optical switch, based on electrowetting and suitable for use with multimode fibers are described. With a 50-µm core, 0.23-N.A. input and output fibers, the measured fiber-to-fiber insertion loss at λ = 0.633 µm was 0.5 ± 0.1 dB for one channel and 2.0 ± 0.2 dB for the other, with cross talk of -22.8 ± 0.5 and <-51 dB, respectively. Response time is ≍20 msec with driving power of ≍25 µW and a voltage requirement of ≤1.0 V. The switch has been tested for over 107 cycles with no observable degradation.
© 1983 Optical Society of America
J. L. Jackel, S. Hackwood, J. J. Veselka, and G. Beni, "Electrowetting switch for multimode optical fibers," Appl. Opt. 22, 1765-1770 (1983)