Design and simulation of wavelength demultiplexer based on heterostructure photonic crystals ring resonators

Abstract In this paper, we have designed a four channel wavelength demultiplexer based on heterostructure photonic crystal (PhC) ring resonator at 1550 nm window. In order to achieve the structure of demultiplexer, three improved rings with different dielectric constants of 11.6, 12, and 12.4 have been used. Every ring has an individual dielectric constant; it means that each ring has a variable resonant wavelength. Quality factor ( Q ) and dropping efficiency of single ring are 842 and 100%, respectively. The results of simulation using finite difference time domain (FDTD) method shows this structure have a good performances and reveals an average transmitted power is higher than 95%, channel spacing is about 6.1 nm and bandwidth for each individual channel is about 2.75 nm. The mean value of the crosstalk between outputs channels and footprint of the proposed structure are about −24.44dB and 294.25 μm 2 (10.7 μm×27.5 μm) respectively.

[1]  Mohammad Ali Mansouri-Birjandi,et al.  Heterostructure four channel wavelength demultiplexer using square photonic crystals ring resonators , 2012 .

[2]  Faraz Monifi,et al.  Heterostructure wavelength division demultiplexers using photonic crystal ring resonators , 2008 .

[3]  R. Nakkeeran,et al.  PCRR based add drop filter for ITU-T G.694.2 CWDM systems , 2013 .

[4]  Steven G. Johnson,et al.  Photonic Crystals: Molding the Flow of Light , 1995 .

[5]  Ali Rostami,et al.  An ultra compact photonic crystal wavelength division demultiplexer using resonance cavities in a modified Y-branch structure , 2011 .

[6]  M. Moravvej-Farshi,et al.  Ultrafast low-threshold all-optical switch implemented by arrays of ring resonators coupled to a Mach-Zehnder interferometer arm: based on 2D photonic crystals. , 2008, Applied optics.

[7]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[8]  Yuefeng Ji,et al.  High-bandwidth and low-loss photonic crystal power-splitter with parallel output based on the integration of Y-junction and waveguide bends , 2012 .

[9]  Q. Gong,et al.  Tunable multichannel filter in photonic crystal heterostructure containing permeability-negative materials , 2008 .

[10]  Qinghua Liao,et al.  Novel ultracompact wavelength division demultiplexer based on photonic band gap , 2012 .

[11]  Weidong Zhou,et al.  Polarization beam splitter based on photonic crystal self-collimation Mach-Zehnder interferometer , 2011 .

[12]  Jean-Pierre Berenger,et al.  A perfectly matched layer for the absorption of electromagnetic waves , 1994 .

[13]  Optimization of a 2D photonic crystal add/drop multiplexer based on contra-directional coupling ☆ , 2006 .

[14]  Ravindra Kumar Sinha,et al.  Design, analysis and optimization of silicon-on-insulator photonic crystal dual band wavelength demultiplexer , 2009 .

[15]  A. Selvarajan,et al.  Investigation of ring resonators in photonic crystal circuits , 2004 .

[16]  S. Obayya,et al.  Novel fast photonic crystal multiplexer-demultiplexer switches , 2011 .

[17]  E. Snoeks,et al.  Design and optimization of 2D photonic crystal waveguides based on silicon , 2002 .

[18]  Compact wavelength de-multiplexer design using slow light regime of photonic crystal waveguides. , 2011, Optics express.

[19]  S. Chu,et al.  Filter synthesis for periodically coupled microring resonators. , 2000, Optics letters.

[20]  Detailed investigation of self-imaging in multimode photonic crystal waveguides for applications in power and polarization beam splitters , 2012 .

[21]  S. Wen,et al.  BROAD OMNIDIRECTIONAL REFLECTOR IN THE ONE-DIMENSIONAL TERNARY PHOTONIC CRYSTALS CONTAINING SUPERCONDUCTOR , 2011 .

[22]  Q. Gong,et al.  Tunable double-channel filter based on two-dimensional ferroelectric photonic crystals , 2007 .