A Proposed Dual Channel Optical Demultiplexer based on Photonic Crystals

Subject Areas : Majlesi Journal of Telecommunication Devices

Bahare  Mohammadi ¹ (Department of Engineering, Shahid Chamran University, Ahvaz, Iran)
Mohammad  Soroosh ² (Department of Engineering, Shahid Chamran University, Ahvaz, Iran)
Abdolnabi  Kovsarian ³ (Department of Engineering, Shahid Chamran University, Ahvaz, Iran)
Farhad  Mehdizadeh ⁴ (Department of Engineering, Shahid Chamran University, Ahvaz, Iran)

Received: 2014-12-06 Accepted : 2014-12-16 Published : 2014-12-01

Keywords: en,

Abstract :

In this paper, we used photonic crystal resonant cavity structure for designing a 2-channel optical wavelength demultiplexer. It has been shown that by using photonic crystal resonant cavity, wavelength separation is possible. In order to select 2 channels with different central wavelengths we employed 2 resonant cavities with different structural parameters. The platform used for designing the proposed demultiplexer is a hexagonal lattice of dielectric rods immersed in air. The demultiplexer has 2 channels with central wavelengths equal to l1=1549.4 nm and l2=1551.2 nm. The transmission efficiency of the demultiplexer is more than 92%. The quality factors for first and second channels are 1936 and 3021 respectively.

References:

[1] F. S. Chien, S. C. Cheng, Y. J. Hsu, and W. F. Hsieh, “Dual band multiplexer/demultiplexer with photonic crystal waveguide couplers for bidirectional communications” Optics Communication 266 592-597 (2006).

[2] S. Rawal, and R. K. Sinha, “Design analysis and optimization of silicon on insulator photonic crystal dual band wavelength demultiplexer”, Optics Communication. 686 0880-0804 (2009).

[3] L. W. Chung and S. L. Lee, “Multimode interference based broad band demultiplexers with internal photonic crystals” Opt. Express 14 (2006) 4923-4927.

[4] Zhang X, Liao Q, Yu T, Liu N and Huang Y “novel ultra-compact wavelength division demultiplexer based on photonic band gap” 2012Optics Communication.285 274-276.

[5] D. Bernier, X. Le Roux, A. Lupu, D. Marris-Morini, L. Vivien, and E. Cassan, “Compact low crosstalk CWDM demultiplexer using photonic crystal superprism”, Opt. Express 42 17260–17214 (2008).

[6] A. Rostami, F. Nazari, H. Alipour Banaei, and A. Bahrami, “A nove proposal for DWDM demultiplexer design using modified T P\photonic crystal structure” Photonic and Nanostrucutres – Fundamentals and Applications 8 14-22 (2010).

[7] M. R. Rakhshani, M. A. M. Birjandi, “Design and simulation of wavelength demultiplexer based on heterostructure photonic crystals ring resonators” Physica E, 50 (2013) 97-101.

[8] S.G. Johnson, J.D. Joannopoulos, Block-iterative frequency-domain methods for Maxwell’s equations in a plane wave basis, Opt. Express 8 (2001) 173–190.

[9] Gedney S D 2010 Introduction to Finite-Difference Time-Domain (FDTD) Method for Electromagnetics (Lexington KY: Morgan&Claypool).

[10] M. Djavid, F. Monifi, A. Ghaffari, and M. S. Abrishamian, “Heterostructure wavelength division multiplexers using photonic crystal ring resonators”, Optics communications, 281, 4028-4032, (2008).

[11] A. Rostami, H. AlipourBanei, F. Nazari, and A. Bahrami, “An ultra-compact photonic crystal wavelength division demultiplexer using resonance cavities in a modified Y-branch stryctyre” Optik 466 1481-1485 (2011).

[12] S. Bouamami and R. Naoum, “Compact WDM demultiplexer for seven channels in photonic crystal” Optik 124 2373-2375 (2013).

[13] H. Alipour-Banaei, F. Mehdizadeh, S. Serajmohammadi, “A novel 4-channel demultiplexer based on photonic crystal ring resonator” Optik 124 5964-5967 (2013).