It is demonstrated that cascaded (dilated) acousto-optic switches exhibit greatly reduced interport and interchannel cross talk. In our experiments, a pair of monolithic polarization-independent acousto-optic switches were joined to simulate the bar and cross states of a dilated switch consisting of a 2 × 2 matrix of subswitches. Reduction of bar- and cross-state extinctions and sidelobe levels confirmed the supposition that leakage of order ∊ in a one-stage device decreases to order ∊2 in dilated devices.
© 1994 Optical Society of America
Original Manuscript: July 26, 1993
Published: January 15, 1994
D. A. Smith, D. J. Fritz, R. H. Hobbs, A. d’Alessandro, and J. E. Baran, "Reduction of cross talk in an acousto-optic switch by means of dilation," Opt. Lett. 19, 99-101 (1994)