Ultra-Fast All-Optical Symmetry ۴×۲ Encoder Based on Interface Effect in ۲D Photonic Crystal

This paper deals with the design and simulation of all-optical ۴×۲ encoderusing the wave interference effect in photonic crystals. By producing ۴ opticalwaveguides as input and two waveguides as output, the given structure was designed.The size of the designed structure is ۱۳۳.۹ μm۲. The given all-optical encoder has acontrast ratio of ۱۳.۲ dB, the response time of ۰.۴۵ ps, and also the bit transfer rate of۲.۲ Tbit/s. The results from these structures suggest the high flexibility of the structures,their resolution rates, and appropriate response time relative to that of other structures inthis rank as well as their applicability in terms of dividing. To elicit the optical band gaprage for structure design, the plane wave expansion method and also thefinite difference time domain methods were used to investigate the results fromdesigned structures.

Keywords:

Photonic Crystal , Photonic Bandgap , Logic Gate , Encoder , Interface