Filter characteristics and optical bistability in NLDFB devices with different grating profiles

Annemie Empsten; Irina P. Veretennicoff

doi:10.1117/12.20653

1 August 1990 Filter characteristics and optical bistability in NLDFB devices with different grating profiles

Annemie Empsten, Irina P. Veretennicoff

Proceedings Volume 1280, High Speed Phenomena in Photonic Materials and Optical Bistability; (1990) https://doi.org/10.1117/12.20653
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

All optical filtering and switching can in principle be realized by the nonlinear distributed feedback device (NLDFB), combining an intensity dependent refractive index and a grating on an integrated optical waveguide. In previous work 1,2,3 the influence of different physical parameters was studied using Coupled Mode Theory and a first order approximation to calculate the coupling coefficients. In this paper we present a more accurate method to calculate these coefficients. This allows us to compare the filter and nonlinear transfer characteristics of the NLDFB device for different grating profiles, including a-periodic gratings such as tapered or shirped gratings. Furthermore we can compare the behaviour of NLDFB devices based on different rectangular waveguides, such as embedded strip guides or raised stripguides with the grating etched at the substrate-waveguide interface. Qualitative results were obtained for InSb on sapphire waveguides.

Citation Download Citation

Annemie Empsten and Irina P. Veretennicoff "Filter characteristics and optical bistability in NLDFB devices with different grating profiles", Proc. SPIE 1280, High Speed Phenomena in Photonic Materials and Optical Bistability, (1 August 1990); https://doi.org/10.1117/12.20653

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