Heinz Ja Ckel

Publications (1)0 Total impact

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  Available from: psu.edu

  Article: Add-Drop Filter Based on Apodized Surface-Corrugated Gratings

  Dorothea Wiesmann, Gian-Luca Bona, Christian David, Daniel Erni, Heinz Ja Ckel
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  ABSTRACT: INTRODUCTION The migration of wavelength division multiplexing schemes from point-to-point long-haul systems to meshed metropolitan area networks demands optical filters that add and/or drop single-wavelength channels at certain network nodes while allowing the majority of the channels to pass the node undisturbed. One possible design of such an add--drop filter consists of a balanced Mach-- Zehnder interferometer with two identical Bragg gratings, one on each of the two interferometer arms. This was originally suggested by Johnson et al. and is schematically shown in Fig. 1. This filter is favorable over other designs 2,3 when small channel distances and integration with other planar optical waveguide components are desired and outweighs the disadvantage of a limited tunability when the filter is implemented in glass waveguides. As described by Johnson et al., the wavelength characteristic in a perfect filter implementation is determined solely by the Bragg grating. More spec
  04/2003;