Abstract

Photonic crystal slab line defect waveguides with slightly small innermost holes are theoretically expected to show light transmission with low-group-velocity and low-dispersion (LVLD) characteristics owing to a linear and almost flat photonic band. In this study, the LVLD characteristics of such waveguides were experimentally confirmed by using modulation phase shift measurement and transmission of ultrashort optical pulses. These results will be applicable to buffering and nonlinearity enhancement of optical signals.

© 2007 Optical Society of America

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References

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    [CrossRef] [PubMed]
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2007

2006

2005

Y. A. Vlasov, M. O'Boyle, H. F. Hamann, and S. J. McNab, Nature 438, 65 (2005).
[CrossRef] [PubMed]

D. Mori and T. Baba, Opt. Express 13, 9398 (2005).
[CrossRef] [PubMed]

2004

A. Y. Petrov and M. Eich, Appl. Phys. Lett. 85, 4866 (2004).
[CrossRef]

T. Asano, K. Kiyota, D. Kumamoto, B. S. Song, and S. Noda, Appl. Phys. Lett. 84, 4690 (2004).
[CrossRef]

2001

M. Notomi, K. Yamada, A. Shinya, J. Takahashi, C. Takahashi, and I. Yokohama, Phys. Rev. Lett. 94, 073903 (2001).

Appl. Phys. Lett.

T. Asano, K. Kiyota, D. Kumamoto, B. S. Song, and S. Noda, Appl. Phys. Lett. 84, 4690 (2004).
[CrossRef]

A. Y. Petrov and M. Eich, Appl. Phys. Lett. 85, 4866 (2004).
[CrossRef]

J. Phys. D

T. Baba and D. Mori, J. Phys. D 40, 2659 (2007).
[CrossRef]

Nature

Y. A. Vlasov, M. O'Boyle, H. F. Hamann, and S. J. McNab, Nature 438, 65 (2005).
[CrossRef] [PubMed]

Opt. Express

Phys. Rev. Lett.

M. Notomi, K. Yamada, A. Shinya, J. Takahashi, C. Takahashi, and I. Yokohama, Phys. Rev. Lett. 94, 073903 (2001).

Other

A. Sakai, I. Kato, D. Mori, and T. Baba, in 17th Annual Meeting of the IEEE Laser & Electro-optics Society (IEEE/LEOS, 2004), paper IThQ5.

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Figures (4)

Fig. 1
Fig. 1

Device structure and photonic band. (a) Top view of LVLD PCW fabricated on SOI substrate. (b) Photonic band of the main propagation mode of PCW for 2 r a = 0.667 . 2 r 2 r is taken as a parameter.

Fig. 2
Fig. 2

Group index n g characteristics of PCW. (a) 2 r a is fixed to 0.667 and 2 r 2 r is varied. (b) 2 r a is varied and 2 r 2 r is optimized to obtain the LVLD characteristics.

Fig. 3
Fig. 3

Measured transmission spectrum, n g characteristics, and band diagram experimentally evaluated for 2 r a = 0.65 (solid curve) and calculated for the parameters in the figures (dashed curve). 2 r 2 r is (a) 1.00 , (b) 0.89, (c) 0.86.

Fig. 4
Fig. 4

Group index n g characteristics for another sample ( 2 r a = 0.64 , 2 r 2 r = 0.84 ) showing LVLD characteristics and autocorrelation traces of input and output optical pulses.

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