Coupled-Wave Devices

  • Herwig Kogelnik
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 41)

Abstract

A scan of recent reviews of integrated optics1–4 or of a recent text book on this subject5, makes it apparent that coupled-wave devices play a major role in this new technology. The reason for this is that optical effects of interest are usually small over distances of the order of a wavelength. Coupled-wave phenomena extend over many wavelengths and can lead to a considerable enhancement of these effects. In integrated optics we encounter a large variety of coupled-wave phenomena and devices. In the following we propose to discuss a selection of these, including directional couplers, switched directional couplers, stepped Δβ couplers, bistable Δβ couplers, tunable coupler filters, the tunable Harris filter, electrooptic Bragg deflectors, acousto-optic Bragg deflectors, TE-TM mode converters, corrugated waveguide filters, distributed Bragg reflector lasers and distributed feedback lasers. The theoretical basis for the treatment of coupled-wave phenomena is the coupled-wave formalism which is summarized in References 6 and 7 and which is reviewed in this symposium by A. Yariv. This formalism provides expressions for the coupling constants of various devices which we will use for our discussion.

Keywords

Microwave GaAs Coupler 

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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • Herwig Kogelnik
    • 1
  1. 1.Bell LaboratoriesHolmdelUSA

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