Design and simulation of an ultra compact integrated wave plate using photonic crystal slab waveguide

K. Bayat; S. K. Chaudhuri; S. Safavi-Naeini

doi:10.1117/12.701366

7 February 2007 Design and simulation of an ultra compact integrated wave plate using photonic crystal slab waveguide

K. Bayat, S. K. Chaudhuri, S. Safavi-Naeini

Proceedings Volume 6468, Physics and Simulation of Optoelectronic Devices XV; 64680N (2007) https://doi.org/10.1117/12.701366
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

We have designed and simulated compact photonic crystal (PC) slab waveguide based wave plate. We have numerically investigated the optical path of the TE-like and TM-like waves propagating through a triangular based photonic crystal (PC) slab waveguide. The PC slab waveguide is formed by removing one row of the air holes along &Ggr;K direction. The plane wave expansion and three-dimensional finite-difference time domain (3D-FDTD) methods were employed for the design and simulation of the PC slab waveguide. The thickness of 0.75a, a is the lattice constant, for the PC slab waveguide provides both TE-like and TM-like modal guiding within the normalized frequency band of 0.26-0.268. Spatial Fourier transform (SFT) of the electromagnetic field distribution in the propagation direction was used for the analysis of the dispersion properties of the guided modes of the PC slab waveguide. It was found that the effective refractive indices of the TM-like modes were substantially larger than that of the TE-like modes. The large birefringence of this structure suggests that the PC slab waveguide is useful for the construction of compact wave plates. The birefringence larger than 12.6 % within the modal guiding frequency band was achieved for the PC slab waveguide. Thus, the PC slab waveguide with the length of 6 &mgr;m provides first-order half wave plate within the normalized frequency band of 0.26-0.268.

Citation Download Citation

K. Bayat, S. K. Chaudhuri, and S. Safavi-Naeini "Design and simulation of an ultra compact integrated wave plate using photonic crystal slab waveguide", Proc. SPIE 6468, Physics and Simulation of Optoelectronic Devices XV, 64680N (7 February 2007); https://doi.org/10.1117/12.701366

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