Multi-channel optical filter design using superimposed Bragg gratings

A. Rostami; M. H. A. Haghnejad; Z. D. Koozehkanani; F. Janabi-Sharifi

doi:10.1117/12.754186

10 October 2007 Multi-channel optical filter design using superimposed Bragg gratings

A. Rostami, M. H. A. Haghnejad, Z. D. Koozehkanani, F. Janabi-Sharifi

Proceedings Volume 6716, Optomechatronic Sensors and Instrumentation III; 67160C (2007) https://doi.org/10.1117/12.754186
Event: International Symposium on Optomechatronic Technologies, 2007, Lausanne, Switzerland

Abstract

In recent years, designing of multi-channel optical filters has become an essential and inseparable part of wavelength-division-multiplexing (WDM) and dense wavelength division multiplexing (DWDM) systems. In this paper, efficient design of multi-channel optical filters using superimposed Bragg gratings is investigated. We use Transfer Matrix Method (TMM) for designing where resulted reflection spectrum is apodized with sinc function. For loss compensation, by choosing suitable sinc parameter (k=0.3), sidemode suppression ratios (SMSRs) of approximately 60 and 55 dB are computed for single-peak and 9-peak filters respectively. The rest of specifications of designed filter are: 9 channels with 1.55 μm central wavelength and 1 nm channel spacing. We show that superimposed Bragg grating can be used to design efficient multi wavelength optical filters with arbitrary characteristics.

Citation Download Citation

A. Rostami, M. H. A. Haghnejad, Z. D. Koozehkanani, and F. Janabi-Sharifi "Multi-channel optical filter design using superimposed Bragg gratings", Proc. SPIE 6716, Optomechatronic Sensors and Instrumentation III, 67160C (10 October 2007); https://doi.org/10.1117/12.754186

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