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Applied Optics

Applied Optics


  • Vol. 17, Iss. 16 — Aug. 15, 1978
  • pp: 2548–2555

Rib waveguide switches with MOS electrooptic control for monolithic integrated optics in GaAs-AlxGa1−xAs

J. C. Shelton, F. K. Reinhart, and R. A. Logan  »View Author Affiliations

Applied Optics, Vol. 17, Issue 16, pp. 2548-2555 (1978)

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Low-loss (1.4-cm−1) single-mode rib waveguides in Al x Ga1− x As heterostructures are fabricated by liquid phase epitaxy, double anodization, and photolithographic techniques. Switching of optical channels between adjacent waveguides is accomplished with directional coupler switches controlled with electrodes laid over an isolating dielectric, making a metal-oxide-semiconductor (MOS) configuration. Complete switching is achieved with <20 V applied to a stepped Δβ reversal electrode configuration. A 2 × 4 switching matrix with low-loss lateral offsets of the waveguides is demonstrated. By laying out several optical switching and guiding experiments within a 128-μm stripe, we show that independent optical circuits can be packed with adequate optical isolation using centerline separations ≈10 μm.

© 1978 Optical Society of America

Original Manuscript: November 21, 1977
Published: August 15, 1978

J. C. Shelton, F. K. Reinhart, and R. A. Logan, "Rib waveguide switches with MOS electrooptic control for monolithic integrated optics in GaAs-AlxGa1−xAs," Appl. Opt. 17, 2548-2555 (1978)

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