The designs of 4×2 encoder based on photonic crystals

Kun-Yi Lee; Yi-Cheng Yang; Yen-Juei Lin; Wei-Yu Lee; Cheng-Che Lee; Sheng-Hsien Wong

doi:10.1117/12.852155

1 December 2009 The designs of 4×2 encoder based on photonic crystals

Kun-Yi Lee, Yi-Cheng Yang, Yen-Juei Lin, Wei-Yu Lee, Cheng-Che Lee, Sheng-Hsien Wong

Proceedings Volume 7630, Passive Components and Fiber-based Devices VI; 76300I (2009) https://doi.org/10.1117/12.852155
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

Abstract

All-optical logic gate is a basic and crucial element for optical signal processing. In this paper, we propose a 4×2 encoder based on two dimensional triangular lattice photonic crystals composed of cylindrical silicon rods. The main structure of the device is a combination of both line defect Y branch and coupler photonic crystal waveguides. The computational simulation is carried out by using a finite-difference time-domain (FDTD) method. The simulation results show that the proposed all-optical photonic crystal waveguide structure could really function as a 4×2 encoder logic gate. In addition, the distance between coupler photonic crystal waveguides, the length of coupler waveguides and the distance between line defect Y branch waveguide structure are optimized for achieving the optimal performance for the proposed encoder logic gates. This device is potentially applicable for photonic integrated circuits.

Citation Download Citation

Kun-Yi Lee, Yi-Cheng Yang, Yen-Juei Lin, Wei-Yu Lee, Cheng-Che Lee, and Sheng-Hsien Wong "The designs of 4×2 encoder based on photonic crystals", Proc. SPIE 7630, Passive Components and Fiber-based Devices VI, 76300I (1 December 2009); https://doi.org/10.1117/12.852155

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