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Two-dimensional photonic crystal multiplexer/demultiplexer

外国特許コード F110003149
整理番号 A111-39WO
掲載日 2011年6月17日
出願国 アメリカ合衆国
出願番号 56684304
公報番号 20060204161
公報番号 07406221
出願日 平成18年2月2日(2006.2.2)
公報発行日 平成18年9月14日(2006.9.14)
公報発行日 平成20年7月29日(2008.7.29)
国際出願番号 PCT/JP2004/012114
国際公開番号 WO2005/022219
国際出願日 平成16年8月24日(2004.8.24)
国際公開日 平成17年10月3日(2005.10.3)
  • 特願2003-307654 (2003.8.29) JP
発明の名称 (英語) Two-dimensional photonic crystal multiplexer/demultiplexer
発明の概要(英語) An object of the present invention is to provide a multiplexer/demultiplexer capable of preventing a decrease in multiplexing/demultiplexing efficiency due to an error in wavelength or due to a crosstalk with other wavelengths. A two-dimensional photonic crystal having holes 22 cyclically arranged is provided with an input waveguide 23 and an output waveguide 24. Located between the two waveguides are two point-like defects 25 and 26, each consisting of a region devoid of the holes 22. From the light including various wavelengths and propagating through the input waveguide 23, the two point-like defects extract a ray of light having a wavelength determined by the shape of the point-like defects and introduce it into the output waveguide 24. Compared with the case where there is only one point-like defect, the above-described construction increases the values of the wavelength spectrum of the extracted light at around the resonance wavelength and decreases the values at the wavelength range far from the resonance wavelength. Therefore, the increase in the values of the wavelength spectrum at around the resonance wavelength ensures that the light having the desired wavelength can be extracted from the waveguide by a large amount even if the wavelength of the light propagating through the waveguide is erroneously shifted from the resonance frequency. Occurrence of noises within a wavelength range far from the resonance wavelength and extraction of light having the wavelengths of adjacent channels are also suppressed.
  • 発明者/出願人(英語)
  • Noda, Susumu; Uji [JP]
  • Asano, Takashi; Kyoto [JP]
  • Akahane, Yoshihiro; Itami [JP]
  • Japan Science & Technology Agency, Kawaguchi [JP]
  • Sumitomo Electric Industries, Ltd., Osaka [JP]
  • 385/30
  • 385/14
  • 398/82
参考情報 (研究プロジェクト等) CREST Function Evolution of Materials and Devices based on Electron/Photon Related Phenomena AREA