IEICE TRANSACTIONS on Electronics
Engineering Photonic Crystal Impurity Bands for Waveguides, All-Optical Switches and Optical Delay Lines
Summary :
We investigate the engineering of the impurity bands in photonic crystals (PCs) for realizing high-efficiency wave guiding, all-optical switching and optical delay for ultrashort optical pulses. It is found that quasi-flat impurity bands suitable for the transmission of ultrashort pulses can be achieved by properly controlling the configuration of coupled cavity waveguides (CCWs). At sharp corners, high bending efficiency is obtained over the entire impurity band. All-optical switching can be realized by creating a dynamical band gap at the center of an impurity band. The concentration of electromagnetic wave at defect regions leads to high switching efficiency while the tunable feature of PC defects makes all-optical control possible. It is also revealed that CCWs with quasi-flat impurity bands provide efficient group delay for ultrashort pulses with negligible attenuation and distortion. From the viewpoint of practical fabrication, the effect of disorder on the transmission property of impurity bands is discussed and the criterion for localization transition is determined.
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- IEICE TRANSACTIONS on Electronics Vol.E85-C No.1 pp.181-189
- Publication Date
- 2002/01/01
- Publicized
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- Type of Manuscript
- Special Section PAPER (Special Issue on Ultrafast Optical Signal Processing and Its Application)
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Sheng LAN, Satoshi NISHIKAWA, Hiroshi ISHIKAWA, Osamu WADA, "Engineering Photonic Crystal Impurity Bands for Waveguides, All-Optical Switches and Optical Delay Lines" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 1, pp. 181-189, January 2002, doi: .
Abstract: We investigate the engineering of the impurity bands in photonic crystals (PCs) for realizing high-efficiency wave guiding, all-optical switching and optical delay for ultrashort optical pulses. It is found that quasi-flat impurity bands suitable for the transmission of ultrashort pulses can be achieved by properly controlling the configuration of coupled cavity waveguides (CCWs). At sharp corners, high bending efficiency is obtained over the entire impurity band. All-optical switching can be realized by creating a dynamical band gap at the center of an impurity band. The concentration of electromagnetic wave at defect regions leads to high switching efficiency while the tunable feature of PC defects makes all-optical control possible. It is also revealed that CCWs with quasi-flat impurity bands provide efficient group delay for ultrashort pulses with negligible attenuation and distortion. From the viewpoint of practical fabrication, the effect of disorder on the transmission property of impurity bands is discussed and the criterion for localization transition is determined.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_1_181/_p
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@ARTICLE{e85-c_1_181,
author={Sheng LAN, Satoshi NISHIKAWA, Hiroshi ISHIKAWA, Osamu WADA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Engineering Photonic Crystal Impurity Bands for Waveguides, All-Optical Switches and Optical Delay Lines},
year={2002},
volume={E85-C},
number={1},
pages={181-189},
abstract={We investigate the engineering of the impurity bands in photonic crystals (PCs) for realizing high-efficiency wave guiding, all-optical switching and optical delay for ultrashort optical pulses. It is found that quasi-flat impurity bands suitable for the transmission of ultrashort pulses can be achieved by properly controlling the configuration of coupled cavity waveguides (CCWs). At sharp corners, high bending efficiency is obtained over the entire impurity band. All-optical switching can be realized by creating a dynamical band gap at the center of an impurity band. The concentration of electromagnetic wave at defect regions leads to high switching efficiency while the tunable feature of PC defects makes all-optical control possible. It is also revealed that CCWs with quasi-flat impurity bands provide efficient group delay for ultrashort pulses with negligible attenuation and distortion. From the viewpoint of practical fabrication, the effect of disorder on the transmission property of impurity bands is discussed and the criterion for localization transition is determined.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - Engineering Photonic Crystal Impurity Bands for Waveguides, All-Optical Switches and Optical Delay Lines
T2 - IEICE TRANSACTIONS on Electronics
SP - 181
EP - 189
AU - Sheng LAN
AU - Satoshi NISHIKAWA
AU - Hiroshi ISHIKAWA
AU - Osamu WADA
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2002
AB - We investigate the engineering of the impurity bands in photonic crystals (PCs) for realizing high-efficiency wave guiding, all-optical switching and optical delay for ultrashort optical pulses. It is found that quasi-flat impurity bands suitable for the transmission of ultrashort pulses can be achieved by properly controlling the configuration of coupled cavity waveguides (CCWs). At sharp corners, high bending efficiency is obtained over the entire impurity band. All-optical switching can be realized by creating a dynamical band gap at the center of an impurity band. The concentration of electromagnetic wave at defect regions leads to high switching efficiency while the tunable feature of PC defects makes all-optical control possible. It is also revealed that CCWs with quasi-flat impurity bands provide efficient group delay for ultrashort pulses with negligible attenuation and distortion. From the viewpoint of practical fabrication, the effect of disorder on the transmission property of impurity bands is discussed and the criterion for localization transition is determined.
ER -
English
