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Design of Ultra Compact Polarization Splitter Based on the Complete Photonic Band Gap |
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| Authors: | Yogita?Kalra |
| Institution: | (1) Center of Relevance and Excellence in Fiber Optics and Optical Communications, Department of Applied Physics, Delhi College of Engineering, Faculty of Technology, University of Delhi, Bawana Road, Delhi, 110 042, India |
| Abstract: | A novel design of polarization splitter based on the complete photonic band gap has been proposed in this paper. The proposed Photonic Band Gap (PBG) polarization splitter is formed by two photonic crystal waveguides composed of dielectric rods in air in honeycomb structure for which complete photonic band gap is obtained using the plane wave expansion (PWE) method. The splitting properties (i.e. coupling length, extinction ratio and insertion loss) of PBG polarization splitter have numerically been investigated using the finite difference time domain (FDTD) method. It has been shown that polarization splitter of length as small as 32 μm can be designed at λ=1.55 μm. The proposed polarization splitter offers a large bandwidth of 120 nm. |
| Keywords: | complete photonic band gap finite difference time domain method photonic crystal plane wave expansion method polarization splitter |
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