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DELONG SU1, SHENGLI PU1,2,* , WEIZHENG LEI1
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
- Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
A kind of W1 line-defect waveguide based on alternative-row-elliptical-hole photonic crystal with triangular lattice is proposed for compact and high-performance slow light applications. The elliptical air-holes are infiltrated with magnetic fluids to realize the on-line tunable slow light. The plane-wave expansion method is employed to investigate the slow light properties numerically. The ultralow dispersion criterion is employed to evaluate the slow light performance. Through varying the major and minor axes of the elliptical air-holes, the optimized structure with high performance of slow light is obtained. The average group index decreases from 13.70 to 13.31 and the normalized delay bandwidth product increases from 0.524 to 0.544 when the magnetic field factor α|| changes from 0 to 1. The corresponding wavelength bandwidth Δλ centering at 0 λ = 1550 nm varies from 59.26 to 63.33 nm..
Elliptical-hole, Photonic crystal waveguide, Tunability, Slow light, Magnetic fluid.
Submitted at: March 18, 2016
Accepted at: June 9, 2016
DELONG SU, SHENGLI PU, WEIZHENG LEI, Magnetically tunable slow light based on alternative-row-elliptical-hole photonic crystal waveguide infiltrated with magnetic fluids, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 5-6, pp. 453-458 (2016)
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