Box-like response of microring resonator filter by stacked double-ring geometry

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1018-1024
Journal / PublicationIEICE Transactions on Electronics
VolumeE85-C
Issue number4
Publication statusPublished - Apr 2002
Externally publishedYes

Abstract

The Lorentzian-shape filter response of a microring resonator filter is not suitable to the practical use in WDM systems, because of the lack of pass band flatness, high cross talk, and the large wing in the stop band. Therefore, the tailoring of filter response shape is required to improve the performance. In this paper, the authors designed and demonstrated the box-like filter response of microring resonator filter by using the supermodes of stacked double microring resonators. The thickness of microring and the separation between them were optimally designed to give the maximally flat response. A fine fabrication process was developed to achieve the deep and very smooth side wall. The shape factor, which is defined by the ratio of -1 dB bandwidth to -10 dB bandwidth, was successfully improved by three factors from 0.17 of Lorentzian shape to 0.51.

Research Area(s)

  • Optical filter, Optical waveguide, Pass band flattening, Ring resonator, Stacked configuration

Citation Format(s)

Box-like response of microring resonator filter by stacked double-ring geometry. / Kokubun, Yasuo; Kato, Takashi; Chu, Sai Tak.

In: IEICE Transactions on Electronics, Vol. E85-C, No. 4, 04.2002, p. 1018-1024.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review