Compact Polarization Beam Splitter Based on Surface Plasmon Polariton Silicon Waveguide

Abstract:

A compact polarization beam splitter (PBS) based on a silicon waveguide-silver nanoribbon-silicon waveguide is proposed and demonstrated numerically by utilizing the evanescent coupling between a strip-nanowire and a nanoslot waveguide. Two-dimensional (2-D) FDTD simulations were performed to elucidate the properties of surface plasmon polaritons (SPPs) in this device made from silicon-metal-silicon, and were found to agree well with the theoretical predictions. TE and TM polarized light are respectively separated into two different output ports of Y-shaped silicon waveguide in which the coupling efficiency is 62% and 45% for 1.55μm wavelength, respectively. The proposed PBS structure could be utilized to develop ultracompact optical polarization modulating device for large-scale photonic integration and optical information processing.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 1233-1238
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.1233
• Online since: April 2014
• Authors: Jun Bo Yang*, Zheng Zhang Shao, Su Zhi Xu, Jia Xu, Zhou Kuo
• Keywords: FDTD, Polarization Beam Splitter, Surface Plasmon Polariton, Waveguide Coupler

References

[1] Dirk Taillaert, Harold Chong, Peter I. Borel, Lars H. Frandsen, Richard M. De La Rue, Roel Baets. A compact two-dimensional grating coupler used as a polarization splitter. IEEE Photonics Technology Letters, 2003, 15(9), 1249-1251.

DOI: 10.1109/lpt.2003.816671

[2] Jijun Feng, Changhe Zhou, Bo Wang, Jiangjun Zheng. Deep silicon grating as high-extinction-ratio polarizing beam splitter. Chinese Optics Letters, 2009, 7(4), 325-327.

DOI: 10.3788/col20090704.0325

[3] Zhechao Wang, Yongbo Tang, Lech Wosinski, Sailing He. Experimental Demonstration of a High Efficiency polarization splitter based on a one-dimensional grating with a Bragg reflector underneath. IEEE Photonic Technology Letters, 2010, 22(21), 1568-1570.

DOI: 10.1109/lpt.2010.2070792

[4] Xianyu Ao, Liu Liu, Lech Wosinski, Sailing He. Polarization beam splitter based on a two-dimensional photonic crystal of pillar type. Applied Physics Letters, 2006, 89, 171115.

DOI: 10.1063/1.2360201

[5] Junbo Feng, Zhiping Zhou. Polarization beam splitter using a binary blazed grating coupler. Optics Letters, 2007, 32(12), 1662-1664.

DOI: 10.1364/ol.32.001662

[6] Feifei Hu, Huaxiang Yi, Zhiping Zhou. Wavelength demultiplexing structure based on arrayed plasmonic slot cavities. Optics Letters, 2011, 36(8), 1500-1502.

DOI: 10.1364/ol.36.001500

[7] A.V. Krasavin, A.V. Zayats. Passive photonic elements based on dielectric-loaded surface plasmon polariton waveguides. Applied Physics Letters, 2007, 90, 211101.

DOI: 10.1063/1.2740485

[8] Kazuo Tanaka, Masahiro Tanaka, Tatsuhiko Sugiyama. Simulation of practical nanometric optical circuits based on surface plasmon polariton gap waveguides. Optics Express, 2005, 13(1), 256-266.

DOI: 10.1364/opex.13.000256

[9] William L. Barnes, Alain Dereux, Thomas W. Ebbesen. Surface plasmon subwavelength optics. Nature, 2003, 424, 824-830.

DOI: 10.1038/nature01937

[10] J.A. Conway, S. Sahni, T. Szkopek. Plasmonic interconnects versus conventional interconnects: a comparison of latency, crosstalk and energy costs. Optics Express, 2007, 15(8), 4474-4484.

DOI: 10.1364/oe.15.004474

[11] Daoxin Dai, Zhi Wang, John E. Bowers. Ultrashort broadband polarization beam splitter based on an asymmetrical directional coupler. Optics Letters, 2011, 36(13), 2590-2592.

DOI: 10.1364/ol.36.002590

[12] Ekmel Ozbay. Plasmonics: Merging photonics and electronics at nanoscale dimensions. Science, 2006, 311, 189-193.

DOI: 10.1126/science.1114849

[13] C. -L. Zhou, F. -W. Sun, C. -H. Dong, X. -F. Ren. Broadband integrated polarization beam splitter with surface plasmon. Optics Letters, 2011, 36(18), 3630-3632.

DOI: 10.1364/ol.36.003630

[14] A.W. Snyder, J.D. Love. Optical Waveguide Theory. Springer, (1983).

[15] H. Raether. Surface plasmons on smooth and rough surfaces and on gratings. Springer, Heidelberg, (1988).

DOI: 10.1007/bfb0048319

[16] Hongtao Gao, Haofei Shi, Changtao Wang, Chunlei Du, Xiangang Luo, Xiangdi Lin. Surface plasmon polariton propagation and combination in Y-shaped metallic channels. Optics Express, 2005, 13(26), 10795-10800.

DOI: 10.1364/opex.13.010795