Title :
Studies on photonic crystal based Add Drop Filter by varying the dimension of inner rods
Author :
Robinson, S. ; Nakkeeran, R.
Author_Institution :
Dept. of Electron. & Commun. Eng., Pondicherry Eng. Coll., Puducherry, India
Abstract :
In this paper two dimensional Photonic Crystal Ring Resonator (2D PCRR) based Add Drop Filter (ADF) is designed and the effect of variation of center rod radius in the inner cavity is studied. The coupling efficiency and dropping efficiency, Q factor and pass band width of the ADF are investigated with and without using scatterer rods. The 2D Finite Difference Time Domain (FDTD) method is used to obtain the normalized transmission spectra of the filter. The propagation modes and Photonic Band Gap (PBG) of the designed structure is calculated by using Plane Wave Expansion (PWE) method. Close to 99% of dropping efficiency and 100% of coupling efficiency with 11 nm of passband width are obtained for 0.9 μm of center rod radius.
Keywords :
Q-factor; band-pass filters; crystal resonators; finite difference time-domain analysis; light propagation; light scattering; light transmission; optical design techniques; optical filters; optical resonators; photonic band gap; photonic crystals; 2D finite difference time domain method; FDTD method; Q factor; add drop filter; center rod radius; coupling efficiency; dropping efficiency; inner cavity; normalized transmission spectra; passband width; photonic band gap; plane wave expansion method; propagation modes; scatterer rods; structural design; two dimensional photonic crystal ring resonator; FDTD method; PWE method; Photonic crystal ring resonator; add drop filter; photonic band gap;
Conference_Titel :
Sustainable Energy and Intelligent Systems (SEISCON 2011), International Conference on
Conference_Location :
Chennai
DOI :
10.1049/cp.2011.0454
