Design and Analysis of an Ultra-Compact and Ultra-Wideband Polarization Beam Splitter Based on Coupled Plasmonic Waveguide Arrays

We present the design of an ultra-compact polarization beam splitter where three symmetrical dielectric channel waveguides are hybrid integrated with Au plasmonic waveguide arrays. Ultra-wideband operation over 50 THz with the insertion loss less than 2 dB for both transverse electric and transverse magnetic mode are predicted. The extinction ratio is better than 15 dB for both polarizations and it is realizable on a chip size as small as 0.93times4.2 mum2.

[1]  Hiroshi Fukuda,et al.  Ultrasmall polarization splitter based on silicon wire waveguides. , 2006, Optics express.

[2]  M.K. Smit,et al.  Mach-Zehnder interferometer polarization splitter in InGaAsP/InP , 2004 .

[3]  M. Mansuripur,et al.  Design of a compact photonic-crystal-based polarizing beam splitter , 2005, IEEE Photonics Technology Letters.

[4]  R. B. Standler,et al.  A frequency-dependent finite-difference time-domain formulation for dispersive materials , 1990 .

[5]  Way-Seen Wang,et al.  A TE-TM mode splitter on lithium niobate using Ti, Ni, and MgO diffusions , 1994, IEEE Photonics Technology Letters.

[6]  T. Chiu,et al.  Propagation characteristics of the supermode based on two coupled semi-infinite rib plasmonic waveguides. , 2007, Optics express.

[7]  Lech Wosinski,et al.  Polarization beam splitter based on a two-dimensional photonic crystal of pillar type , 2006 .

[8]  Masaya Notomi,et al.  Superprism Phenomena in Photonic Crystals , 1998 .

[9]  Jingbo Cai,et al.  Ultracompact high-efficiency polarizing beam splitter with a hybrid photonic crystal and conventional waveguide structure. , 2003, Optics letters.

[10]  H.K. Tsang,et al.  Integrated polarization beam splitter in high index contrast silicon-on-insulator waveguides , 2005, IEEE Photonics Technology Letters.

[11]  Michal Lipson,et al.  Subwavelength confinement in an integrated metal slot waveguide on silicon. , 2006, Optics letters.

[12]  Qing Huo Liu,et al.  An FDTD algorithm with perfectly matched layers for general dispersive media , 2000 .

[13]  Seung Gol Lee,et al.  Design and fabrication of a significantly shortened multimode interference coupler for polarization splitter application , 2003 .

[14]  T. Ebbesen,et al.  Channel plasmon subwavelength waveguide components including interferometers and ring resonators , 2006, Nature.

[15]  Guo Ping Wang,et al.  All-angle broadband negative refraction of metal waveguide arrays in the visible range: theoretical analysis and numerical demonstration. , 2006, Physical review letters.

[16]  T. Ebbesen,et al.  Channel plasmon-polariton guiding by subwavelength metal grooves. , 2005, Physical review letters.

[17]  N.M.B. Perney,et al.  Neodymium-doped tantalum pentoxide waveguide lasers , 2005, IEEE Journal of Quantum Electronics.