Apodized coupled resonator waveguides

In this paper we propose analyse the apodisation or windowing of the coupling coefficients in the unit cells of coupled resonator waveguide devices (CROWs) as a means to reduce the level of secondary sidelobes in the bandpass characteristic of their transfer functions. This technique is regularly em...

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Bibliographic Details
Published in:Optics express 2007-08, Vol.15 (16), p.10196-10206
Main Authors: Capmany, J, Muñoz, P, Domenech, J D, Muriel, M A
Format: Article
Language:English
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Summary:In this paper we propose analyse the apodisation or windowing of the coupling coefficients in the unit cells of coupled resonator waveguide devices (CROWs) as a means to reduce the level of secondary sidelobes in the bandpass characteristic of their transfer functions. This technique is regularly employed in the design of digital filters and has been applied as well in the design of other photonic devices such as corrugated waveguide filters and fiber Bragg gratings. The apodisation of both Type-I and Type-II structures is discussed for several windowing functions.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.15.010196