Paper Details

Forthcoming Optical computers and Optical signal Processors need all-optical devices in order to get rid offrom Optical-Electrical-Optical conversions; Optical gates play a vital role in Optical networks. Photonic crystals (PhC)are periodic dielectric structures that have a band gap that forbids the propagation of a certain frequency range of light.This property enables one to control light with amazing facility and produce effects that are impossible with conventionaloptics and its dielectric constant can be varied occasionally. In this paper, Photonic crystal based Optical HalfSubtractor on hexagonal lattice pattern with circle shaped rods is proposed. The Half Subtractor enactment can beupgraded by providing proper distinct space in output power between ‘0’ and ‘1’ logical states and operate well even inthe reduced input power level. Errors during the identification of logical states (Logic ‘0’ and Logic ‘1’) can becondensed by establishing a threshold for output power. If the output power level is more than 0.7µW or less than0.35µW, then it is regarded as logic ‘1’ and logic ‘0’ respectively. Another advantage is found with its contrast ratiowhich is about 7.78 dB and 11.76 dB for Difference and Borrow respectively. Compactness and ease of design are thecharacteristics which makes suitable for Photonic Integrated Circuit (PIC) applications.

R.Sivaranjani, A. Sivanantha Raja, D. Shanmuga sundar, T.K.Shanthi, “DESIGN OF 2 - DIMENSIONAL PHOTONIC CRYSTAL BASED ALLOPTICAL HALF SUBTRACTOR”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 20, pp. -, January 2018.