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Please use this identifier to cite or link to this item: http://hdl.handle.net/10131/8050

Title: Bessel-thompson filter using double-series-coupled microring resonator
Authors: Kato, Tomoyuki
Kokubun, Yasuo
國分, 泰雄
カトウ, トモユキ
コクブン, ヤスオ
Keywords: Microresonators
optical waveguide filers
transfer function matrices
wavelength-division multiplexing
Issue Date: 15-Nov-2008
Publisher: Institute of Electronics Engineers
Abstract: 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.
URI: http://hdl.handle.net/10131/8050
Appears in Collections:5-1 学術雑誌論文

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