Design of single-mode polarization splitter with a configuration of asymmetric Y-junction in two-dimensional honeycomb photonic crystal

Rei-Shin Chen; Hong-Bin Wei

doi:10.1117/12.734898

17 September 2007 Design of single-mode polarization splitter with a configuration of asymmetric Y-junction in two-dimensional honeycomb photonic crystal

Rei-Shin Chen, Hong-Bin Wei

Author Affiliations +

Proceedings Volume 6698, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications; 66981E (2007) https://doi.org/10.1117/12.734898
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Single-mode polarization splitter with a configuration of asymmetric Y-junction is proposed in two-dimensional (2D) honeycomb photonic crystal (PhC) of dielectric rods. Six dielectric rods with a radius of 0.12a (The radius of a regular rod is 0.25a.) are placed on the junction region to block transverse magnetic (TM) light and to pass transverse electric (TE) light by the bandgap effect, where a is the shortest distance between two regular rods. And one rod with a radius of 0.32a is employed to enhance the bending efficiency of TM light through a resonance effect. Device performance is simulated by the finite-difference time-domain method. At 1550 nm wavelength, polarization extinction ratio (PER) between the two output waveguides is larger than 20 dB for either TE or TM input. Polarization splitting as a function of wavelength is also studied in this paper.

Citation Download Citation

Rei-Shin Chen and Hong-Bin Wei "Design of single-mode polarization splitter with a configuration of asymmetric Y-junction in two-dimensional honeycomb photonic crystal", Proc. SPIE 6698, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications, 66981E (17 September 2007); https://doi.org/10.1117/12.734898

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KEYWORDS

Dielectric polarization

Waveguides

Dielectrics

Photonic crystals

Finite-difference time-domain method

Wave propagation

Beam splitters

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