@ARTICLE{Kannaiyan_V._Investigation_2018, author={Kannaiyan, V. and Savarimuthu, R. and Dhamodharan, S.K.}, volume={vol. 26}, number={No 2}, journal={Opto-Electronics Review}, pages={108-115}, howpublished={online}, year={2018}, publisher={Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology}, abstract={In this attempt, Two Dimensional Photonic Crystal (2DPC) Quasi Square Ring Resonator (QSRR) based four channel demultiplexer is proposed and designed for Wavelength Division Multiplexing systems. The performance parameters of the demultiplexer such as transmission efficiency, passband width, line spacing, Q factor and crosstalk are investigated. The proposed demultiplexer is composed of bus waveguide, drop waveguide and QSRR. In the proposed demultiplexer, the output ports are arranged separately in odd and even number, where an odd number of ports are located on the right side and even number of ports are located on the left side of the bus waveguide that are used to reduce the channel interference or crosstalk. Further, the refractive index of rods around the center rod is increased linearly one to another in order to improve the signal quality. The resonant wavelengths of the proposed demultiplexer are of 1521.1 nm, 1522.0 nm, 1523.2 nm and 1524.3 nm, respectively. The footprint of the device is of 180.96 μm2. Then, a four channel point to point network is designed and the proposed four channel demultiplexer is implemented by replacing a conventional demultiplexer. Finally, functional parameters of the network, namely, BER, receiver sensitivity and Q factor are estimated by varying the link distance. This attempt could create new dimensions of research in the domain of photonic networks.}, type={Article}, title={Investigation of 2D-photonic crystal resonant cavity based WDM demultiplexer}, URL={http://journals.pan.pl/Content/115300/PDF/main.pdf}, keywords={Photonic Band Gap, Quasi Ring Resonator, Resonant cavity, Finite difference time domain, Plane wave expansion}, }