Proposal of an Ultracompact Triplexer Using Photonic Crystal Waveguide with an Air Holes Array
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Abstract
We propose an ultracompact triplexer based on a shift of the cutoff frequency of the fundamental mode in a planar photonic crystal waveguide (PCW) with a triangular lattice of air holes. The shift is realized by modifying the radii of the border holes adjacent to the PCW core. Some defect holes are introduced to control the beam propagation. The numerical results obtained by the finite-difference time-domain method show that the presented triplexer can separate three specific wavelengths, i.e. 1310, 1490 and 1550 nm with the extinction ratios higher than -18 dB. The designed device with a size as compact as 12 μm × 6.5 μm is feasible for the practical application, and can be utilized in the system of fiber to the home. -
References
[1] Joannopoulos J D, Meade R D and Winn J N 1995 Photonic Crystals: Molding the Flow of Light (Princeton, NJ: Princeton University Press) [2] Johnson S G and Joannopoulos J D 2002 Photonic Crystals: The Road from Theory to Practice (Boston: Kluwer Academic Publishers) [3] Mekis A, Chen J C, Kurland I, Fan S H, Villeneuve P R and Joannopoulos J D 1996 Phys. Rev. Lett. 77 3787 [4] Zhang C, Tang X, Mao X Y et al 2008 Chin. Phys. Lett. 25 978 [5] Liu T, Zakharian A R, Fallahi M, Moloney J V and Mansuripur M 2005 IEEE Photon. Technol. Lett. 17 1435 [6] Zhang C, Qiao F, Wan J and Zi J 2001 Chin. Phys. Lett. 18 1082 [7] Soto F C, Martínez A, García J, Ramos F et al 2004 Opt. Express 12 161 [8] Yu T B, Zhou H F, Gong Z, Yang J Y, Jiang X Q and Wang M H 2008 J. Phys. D: Appl. Phys. 41 095101 [9] Niemi T, Frandsen L H, Hede K K, HarpØth A, Borel P I and Kristensen M 2006 IEEE Photon. Technol. Lett. 18 226 [10] Chien F S S, Hsu Y J and Hsieh W F 2004 Opt. Express 12 1119 [11] Koshiba M 2001 J. Lightwave Technol. 19 1970 [12] Sharkawy A, Shi S and Prather D W 2001 Appl. Opt. 40 2247 [13] Kim H J, Park I, B H O, Park S G, Lee E H and Lee S G 2004 Opt. Express 12 5625 [14] Qiang Z, Zhou W and Soref R A 2007 Opt. Express 15 1823 [15] Shi Y, Dai D and He S 2006 IEEE Photon. Technol. Lett. 18 2293 [16] Shih T T, Wu Y D and Lee J J 2009 IEEE Photon. Technol. Lett. 21 18 [17] Yu T B, Huang J H, Liu N H, Yang J Y, Liao Q H and Jiang X Q 2010 Appl. Opt. 49 2168 [18] Taflove A and Hagness S C 2000 Computational Electrodynamics: The Finite-Difference Time-Domain Method 2nd edn (Boston: Artech House)
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