Photonic Crystal Resonators in Designing Optical Decoders

Document Type : Articles

Authors

1 Department of Electrical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

Abstract

Abstract
New design in photonic crystal structures has provided a great opportunity to employ optical decoders with high contrast ratio and low response time. Based on the last published articles, photonic crystal-based decoders result in a contrast ratio higher than 20 dB and a response time of 200 fs which is proper to use in optical circuits. Changing the path of a signal may occur with the help of a resonator in the form of a cavity or ring. Dropping a signal at a wavelength makes a possible to direct it toward the desired path. We present an introduction to the decoding operation and its advantages in different applications, followed by an explanation of the excellent features of photonic crystals including forbidden bandgap and the optical Kerr effect. Furthermore, we discuss the key role of the resonance phenomenon in photonic crystal structures. Then, we investigate the valuable designs in approaching the decoding. It has been tried to present an algorithm to design photonic crystal-based decoders which is so needed for research. 

Keywords

References

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