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Optica Publishing Group
  • Conference on Optical Fiber Communication/International Conference on Integrated Optics and Optical Fiber Communication
  • 1993 OSA Technical Digest Series (Optica Publishing Group, 1993),
  • paper TuH3
  • https://doi.org/10.1364/OFC.1993.TuH3

Polarization-insensitive low-voltage optical waveguide switch using InGaAsP/lnP four- port Mach-Zehnder interferometer

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Abstract

Polarization-independent operation is highly desirable for optical-waveguide switches. It can be realized with directional couplers, digital optical switches (DOS’s),1 and Mach-Zehnder interferometric (MZI) devices. MZI switches2 have spatially separated regions for electro-optic phase shifting and mode coupling that may permit independent optimization. Multimode- interference (MMI) couplers were recently demonstrated to be promising as polarization-insensitive and fabrication-tolerant power splitter-combiners.3 Zucker et al.4 realized a polarization- insensitive MZI switch by applying MMI couplers and introducing strain in quantum wells.

© 1993 Optical Society of America

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