Retrieval of Bragg grating transmission spectra by post-process removal of spurious Fabry-Pérot oscillations

Efficient post-process suppression is demonstrated of spurious Fabry-Pérot oscillations, introduced by multiple cavity effects in transmission spectra measurements of various Bragg grating devices. These devices were fabricated within access waveguides and terminated with cleaved facets. The tool, b...

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Bibliographic Details
Published in:Optics express 2009-08, Vol.17 (16), p.13493-13501
Main Authors: Strain, M J, Gnan, M, Bellanca, G, De La Rue, R M, Sorel, M
Format: Article
Language:English
Subjects:
Algorithms
Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Interferometry - instrumentation
Light
Models, Theoretical
Optical Devices
Oscillometry - instrumentation
Refractometry - instrumentation
Scattering, Radiation
Spectrum Analysis - instrumentation
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Summary:Efficient post-process suppression is demonstrated of spurious Fabry-Pérot oscillations, introduced by multiple cavity effects in transmission spectra measurements of various Bragg grating devices. These devices were fabricated within access waveguides and terminated with cleaved facets. The tool, based on a curve-fitting to an equivalent scattering matrix model, is shown to extract transmission spectra of devices, without a-priori knowledge of their properties. Simple and complex grating structure spectra are successfully extracted and compare well with simulated results. The technique exhibits robust behaviour for varying facet conditions and device geometries, outperforming classical averaging techniques.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.17.013493