Title :
Modeling and designing of Chebyshev type coupled photonic crystal filters based on coupling matrix
Author :
Dai, Zuoxing ; Liu, Yuanyun ; Heng, Yan
Author_Institution :
Inst. of Shanghai Acad. of Spaceflight Technol. of 802, Shanghai, China
Abstract :
A method for modeling and designing of coupled resonators photonic crystal (PC) filters for wavelength division multiplexing (WDM) systems is presented. This proposed method is based on coupling coefficients of intercoupled resonators and the external quality factors of the input and output resonators based on the circuit approach. A general formulation for extracting the two types of parameters from the physical structure of the PC filters is given. At last, we redesign a third-order Chebyshev filter which has a center frequency of 193.55THz, a flat bandwidth of 50GHz, and ripples of 0.1 dB in the pass-band. The filter´s structure derived from the proposed method is more compact.
Keywords :
Chebyshev filters; Q-factor; coupled circuits; optical filters; optical resonators; photonic crystals; wavelength division multiplexing; Chebyshev type coupled photonic crystal filters; WDM systems; bandwidth 50 GHz; coupled resonators photonic crystal filters; coupling coefficients; coupling matrix; external quality factors; frequency 193.55 THz; intercoupled resonators; physical structure; third-order Chebyshev filter; wavelength division multiplexing systems; Band pass filters; Couplings; Filtering theory; Microwave filters; Optical filters; Photonic crystals; Resonator filters; Coupling matrix; Equivalent circuit model; Photonic crystal filters;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230467
