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Proceedings Paper

Polarization beam splitter for two-dimensional photonic crystal self-collimation devices
Author(s): Rei-Shin Chen; Hong-Bin Wei
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Paper Abstract

In this paper, we propose a polarization beam splitter (PBS) for two-dimensional photonic crystal (2D PhC) self-collimation devices. By engineering the PhC dispersion characteristics, both transverse magnetic (TM) and transverse electric (TE) light can propagate collinearly in the same PhC by self-collimation phenomena. Either one or two defect regions are designed to pass the TM light and to reflect the TE light such that the two polarizations can be efficiently separated into different output ports. The finite-difference time-domain (FDTD) method is employed to assess the device performance. Polarization extinction ratios (PERs) between the two output ports are 25.4 dB and 31.8 dB for TM and TE inputs, respectively. This PBS also exhibits a large operating wavelength range (PER > 20 dB) covering all over the optical C-band and L-band. Fabrication tolerance for the radius of air holes is approximately 10 nm. Moreover, the size of the PBS is only 24 μm x 18 μm and can be even more compact for a lower PER.

Paper Details

Date Published: 20 September 2007
PDF: 11 pages
Proc. SPIE 6695, Optics and Photonics for Information Processing, 669511 (20 September 2007); doi: 10.1117/12.731063
Show Author Affiliations
Rei-Shin Chen, Lunghwa Univ. of Science and Technology (Taiwan)
Hong-Bin Wei, Lunghwa Univ. of Science and Technology (Taiwan)


Published in SPIE Proceedings Vol. 6695:
Optics and Photonics for Information Processing
Abdul A.S. Awwal; Khan M. Iftekharuddin; Bahram Javidi, Editor(s)

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