Slow-light in photonic crystal waveguides/fibers: dispersion tailoring schemes for obtaining a high group index with wide band and low GVD

Liyong Ren; Jian Liang; Yu Liu; Haijuan Ju; Maojin Yun; Chengju Ma; Xu Han; Xiao Lin; Yasuo Tomita

doi:10.1117/12.914460

8 February 2012 Slow-light in photonic crystal waveguides/fibers: dispersion tailoring schemes for obtaining a high group index with wide band and low GVD

Liyong Ren, Jian Liang, Yu Liu, Haijuan Ju, Maojin Yun, Chengju Ma, Xu Han, Xiao Lin, Yasuo Tomita

Author Affiliations +

Proceedings Volume 8273, Advances in Slow and Fast Light V; 82730L (2012) https://doi.org/10.1117/12.914460
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Phenomenon of slow light has long been a hot research topic due to its promising and potential applications in communication networks, signal processing, optical sensors and nonlinear interactions. Particularly, photonic crystal devices, being capable of supporting slow-light propagation, are much attractive owing to its room-temperature operation and tunable dispersion features. Among them, photonic crystal waveguides (PCWs) are specially used in compact devices, while photonic band-gap fibers (PBGFs) are usually used in short-distance propagation and high sensitive interferometers. In this paper, dispersion tailoring schemes for obtaining a high group index with the wide band and low group velocity dispersion (GVD) are reviewed in both PCWs and PBGFs. For the same purpose, we propose schemes for the slow-pulse propagation in PCWs based on the air-hole shifting method and in PBGFs based on the microfluid infiltration method, respectively. Simulation results using 2D plane wave expansion method and finite-difference timedomain (FDTD) method are given. Pulse distortion and design optimization are also discussed in some detail with the consideration of the practical fabrication errors. Slow-light pulse propagation in photonic crystal fiber is also demonstrated in the experiment based on stimulated Brillouin scattering.

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Liyong Ren, Jian Liang, Yu Liu, Haijuan Ju, Maojin Yun, Chengju Ma, Xu Han, Xiao Lin, and Yasuo Tomita "Slow-light in photonic crystal waveguides/fibers: dispersion tailoring schemes for obtaining a high group index with wide band and low GVD", Proc. SPIE 8273, Advances in Slow and Fast Light V, 82730L (8 February 2012); https://doi.org/10.1117/12.914460

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KEYWORDS

Dispersion

Slow light

Photonic crystal fibers

Photonic crystals

Waveguides

Light wave propagation

Finite-difference time-domain method

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