Bessel-Thompson Filter Using Double-Series-Coupled Microring Resonator

被引：11

作者：

Kato, Tomoyuki ^{[1
,2
]}

Kokubun, Yasuo ^{[3
,4
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Engn, Dept Elect & Comp Engn, Yokohama, Kanagawa 240, Japan

[2] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan

[3] Yokohama Natl Univ, Grad Sch Engn, Dept Elect & Comp Engn, Yokohama, Kanagawa 2408501, Japan

[4] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 2408501, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2008年 / 26卷 / 21-24期

关键词：

Microresonators; optical waveguide filers; transfer function matrices; wavelength-division multiplexing;

D O I：

10.1109/JLT.2008.925028

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We analyzed the dispersion characteristics of double-series-coupled microring resonator filter and found that the coupling efficiency between resonators for the zero third-order dispersion (Bessel-Thompson) filter is one-third of that of a flat passband (Butterworth) filter. By controlling the coupling efficiencies between waveguides, the flat-top group delay response (Bessel-Thompson filter response) was realized. However, under the symmetric arrangement of coupling efficiency, the Bessel-Thompson filter lost transmittance by 1.25 dB. Thus we found the optimum condition of coupling efficiencies for achieving zero third-order dispersion (flat-group delay) with unity transmittance is an asymmetric arrangement of coupling efficiencies.

引用

页码：3694 / 3698

页数：5

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