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Proceedings Article

The designs of XOR logic gates based on photonic crystals

[+] Author Affiliations
Kun-Yi Lee, Jhe-Min Lin, Yi-Cheng Yang, Yi-Bin Yang, Jia-Sing Wu, Yen-Juei Lin, Wei-Yu Lee

China Institute of Technology (Taiwan)

Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71353Y (November 18, 2008); doi:10.1117/12.803465
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From Conference Volume 7135

  • Optoelectronic Materials and Devices III
  • Yi Luo; Jens Buus; Fumio Koyama; Yu-Hwa Lo
  • Hangzhou, China | October 26, 2008

abstract

All-optical logic gate based on photonic crystal waveguides is a promising technique in future high-speed all-optical signal processing. In this paper, we propose a XOR logic gate based on two dimensional triangular lattice photonic crystals composed of cylindrical silicon rods in air. The main structure of the device is a line defect asymmetric Y branch waveguide. It is expected that there should be a phase shift between the two input beams. Hence, if an appropriate initial phase is introduced, the two input beams may interfere constructively or destructively to realize the logical functions. The simulation results show that the proposed all-optical photonic crystal waveguide structure could really function as XOR logic gates. The interference section length and width of photonic crystal waveguide structure are optimized for achieving the optimal performance for the proposed XOR logic gates. This device is potentially applicable for photonic integrated circuits.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Kun-Yi Lee ; Jhe-Min Lin ; Yi-Cheng Yang ; Yi-Bin Yang ; Jia-Sing Wu, et al.
"The designs of XOR logic gates based on photonic crystals", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71353Y (November 18, 2008); doi:10.1117/12.803465; http://dx.doi.org/10.1117/12.803465


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