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Proceedings Paper

Nonlinearity induced ultrafast slow-light tuning in photonic crystal waveguide
Author(s): Keisuke Kondo; Mizuki Shinkawa; Yohei Hamachi; Yuji Saito; Yoshiki Arita; Toshihiko Baba
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Paper Abstract

We demonstrated ultrafast delay tuning of slow-light pulse with a response time < 10 ps. This is achieved using two types of slow light: dispersion-compensated slow light for the signal pulse; and low-dispersion slow light to enhance the nonlinear effect of the control pulse. These two slow light are generated simultaneously in lattice-shifted photonic crystal waveguides, arising from flat and straight sections of the photonic band, respectively. The control pulse blue-shifts the signal pulse spectrum, through dynamic tuning and cross-phase modulation caused by the plasma effect of two-photonabsorption carriers. This changes the delay by up to 10 ps only when the two pulses overlap within the waveguide, and enables an ultrafast tuning that is not limited by the carrier lifetime. Using this, we succeeded in the delay tuning of one target pulse within a pulse train with 12 ps intervals.

Paper Details

Date Published: 6 March 2013
PDF: 7 pages
Proc. SPIE 8636, Advances in Slow and Fast Light VI, 86360Z (6 March 2013); doi: 10.1117/12.2003760
Show Author Affiliations
Keisuke Kondo, Yokohama National Univ. (Japan)
Mizuki Shinkawa, Yokohama National Univ. (Japan)
Japan Science and Technology Agency (Japan)
Yohei Hamachi, Yokohama National Univ. (Japan)
Japan Science and Technology Agency (Japan)
Yuji Saito, Yokohama National Univ. (Japan)
Japan Science and Technology Agency (Japan)
Yoshiki Arita, Yokohama National Univ. (Japan)
Japan Science and Technology Agency (Japan)
Toshihiko Baba, Yokohama National Univ. (Japan)
Japan Science and Technology Agency (Japan)


Published in SPIE Proceedings Vol. 8636:
Advances in Slow and Fast Light VI
Selim M. Shahriar; Frank A. Narducci, Editor(s)

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