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Investigation on 2D photonic crystal-based eight-channel wavelength-division demultiplexer

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Abstract

In this paper, eight-channel wavelength-division demultiplexer (WDDM) is proposed and designed using two-dimensional photonic crystal (2DPC) ring resonator whose corresponding functional parameters such as transmission efficiency, resonant wavelength, Q factor are investigated. The proposed structure consists of bus waveguide, dropping waveguide and square ring resonators. Eight different channels are dropped by altering the cavity size and radius of the defect rods. The plane-wave expansion (PWE) and finite-difference time-domain (FDTD) methods are employed to analyse the photonic band gap (PBG) of periodic and non-periodic structure and to arrive normalized transmission spectra, respectively. The resonant wavelengths of eight-channel demultiplexers are 1496.9, 1502.3, 1506.9, 1512.3, 1515.0, 1520.4, 1525.3 and 1530.6 nm. The average transmission efficiency, Q factor and spectral width of proposed demultiplexer are 81%, 825 and 1.8 nm, respectively. The mean channel spacing is about 4.2 nm. The size of the demultiplexer is small; hence, it can be utilized for photonic integrated circuits (PIC).

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Authors and Affiliations

  1. Mount Zion College of Engineering and Technology, Pudukkottai, Tamil Nadu, India

    K. Venkatachalam & S. Robinson

  2. Department of Electronics and Communication Engineering, Tiruchirappalli, India

    D. Sriram Kumar & S. Robinson

  3. National Institute of Technology, Tiruchirappalli, Tamil Nadu, India

    D. Sriram Kumar

Authors
  1. K. Venkatachalam
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  2. D. Sriram Kumar
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  3. S. Robinson
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Correspondence to K. Venkatachalam.

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Venkatachalam, K., Kumar, D.S. & Robinson, S. Investigation on 2D photonic crystal-based eight-channel wavelength-division demultiplexer. Photon Netw Commun 34, 100–110 (2017). https://doi.org/10.1007/s11107-016-0675-7

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  • DOI: https://doi.org/10.1007/s11107-016-0675-7

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