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Here, we proposed a high performance 16-channel optical demultiplexer using two-dimensional photonic crystal ring resonator for telecommunication systems. By plane wave expansion (PWE) method the photonic band gap (PBG) of proposed structure calculated. Then, with finite difference time domain (FDTD) method the performance parameters of designed two-dimensional photonic crystal demultiplexer are analyzed. It is found that the channel wavelength of wavelength-division multiplexing (WDM) is truly tuned by changing the structure parameters of the demultiplexer and position of rod. Output peaks located in the optical communication C-band and L-band with the transmission efficiency of 99 %. The demultiplexer exhibits high-quality factor of 5176, and spectral width of 0.3. Very low crosstalk values are between −19 dB and −90 dB where, device only occupies an area of 1708.65 µm 2 . The proposed compact 16-channel demultiplexer can find more applications for the ultra-compact WDM systems in highly integrated telecommunication circuits.

Tunable High Performance 16-Channel Demultiplexer on 2D Photonic Crystal Ring Resonator Operating at Telecom Wavelengths