A new long-range single nanotube hybrid plasmonic waveguide

In this paper, a novel long-range single nanotube hybrid plasmonic waveguide composed of a silicon nanotube and a thin metal layer embedded in it is designed. The geometry of this waveguide is much different from the conventional hybrid plasmonic waveguide such as a tube-wedge or rectangle long-range hybrid plasmonic waveguide. With strong coupling between the silicon nanowire mode and long-range surface plasmon polariton (SPP) mode, both deep subwavelength mode confinement and low propagation loss has been achieved. We evaluate the properties of the ultra-small hybrid plasmonic waveguide including propagation length (L), normalized mode area (Aeff /A0), and figure of merit (FoM). The results show that the designed hybrid plasmonic waveguide enables an ultra-small deep-subwavelength mode in a smaller area than presented long-range hybrid SPP waveguides. What’s more, the propagation length is longer than 1mm and optimization FoM of our waveguide is much larger than 104, which show much better performance that of wedge or rectangle hybrid plasmonic waveguide. Finally, another significant improvement of our structure is that the area of the cross-section is about 0.05um2, which is much smaller than any other presented hybrid plasmonic waveguides.

[1]  J. Aitchison,et al.  Hybrid plasmonic waveguide-based ultra-low insertion loss transverse electric-pass polarizer. , 2016, Optics letters.

[2]  F. García-Vidal,et al.  Guiding and focusing of electromagnetic fields with wedge plasmon polaritons. , 2008, Physical review letters.

[3]  Eicke R. Weber,et al.  Room-Temperature Ultraviolet Nanowire Nanolasers. , 2001 .

[4]  Dirk Englund,et al.  Ultrafast photonic crystal nanocavity laser , 2006 .

[5]  Q. Gong,et al.  Nanotube based hybrid plasmon polariton waveguide for propagation loss reduction and enhanced field confinement inside the gap region at the subwavelength scale , 2014 .

[6]  B. Williams.  Terahertz quantum cascade lasers , 2007, 2008 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference.

[7]  Zhiquan Li,et al.  Physical characteristics with SPP in the metallic nanowires structure , 2012 .

[8]  E. Ozbay.  Plasmonics: Merging Photonics and Electronics at Nanoscale Dimensions , 2006, Science.

[9]  Nader Engheta,et al.  Tunneling of electromagnetic energy through subwavelength channels and bends using epsilon-near-zero materials. , 2006, Physical review letters.

[10]  Liang Wang,et al.  Long range hybrid tube-wedge plasmonic waveguide with extreme light confinement and good fabrication error tolerance. , 2016, Optics express.

[11]  Wei-Ping Huang,et al.  Novel hybrid plasmonic waveguide consisting of two identical dielectric nanowires symmetrically placed on each side of a thin metal film. , 2012, Optics express.

[12]  D. Pile,et al.  Channel plasmon-polariton in a triangular groove on a metal surface. , 2004, Optics letters.

[13]  X. Zhang,et al.  A hybrid plasmonic waveguide for subwavelength confinement and long-range propagation , 2008 .

[14]  W. Barnes,et al.  Surface plasmon subwavelength optics , 2003, Nature.

[15]  Jian Wang.  A review of recent progress in plasmon-assisted nanophotonic devices , 2014 .

[16]  Rupert F. Oulton,et al.  Confinement and propagation characteristics of subwavelength plasmonic modes , 2008 .

[17]  Zheng Zheng,et al.  Hybrid wedge plasmon polariton waveguide with good fabrication-error-tolerance for ultra-deep-subwavelength mode confinement. , 2011, Optics express.

[18]  D. Gramotnev,et al.  Plasmonics beyond the diffraction limit , 2010 .

[19]  Sailing He,et al.  A silicon-based hybrid plasmonic waveguide with a metal cap for a nano-scale light confinement. , 2009, Optics express.

[20]  M. Smit,et al.  Lasing in metallic-coated nanocavities , 2007 .

[21]  P. Berini.  Long-range surface plasmon polaritons , 2009 .

[22]  Peter B Catrysse,et al.  Geometries and materials for subwavelength surface plasmon modes. , 2004, Journal of the Optical Society of America. A, Optics, image science, and vision.

[23]  Jian Wang,et al.  Long-Range Hybrid Plasmonic Slot Waveguide , 2013, IEEE Photonics Journal.

[24]  S. Sikdar,et al.  Fundamentals and applications , 1998 .

[25]  Zheng Zheng,et al.  Symmetric hybrid surface plasmon polariton waveguides for 3D photonic integration. , 2009, Optics express.

[26]  Alexandra Boltasseva,et al.  Triangular metal wedges for subwavelength plasmon-polariton guiding at telecom wavelengths. , 2008, Optics express.

[27]  A. D. Boardman,et al.  Electromagnetic surface modes , 1982 .

[28]  Fetah Benabid,et al.  Field enhancement within an optical fibre with a subwavelength air core , 2007 .

[29]  S. Maier.  Plasmonics: Fundamentals and Applications , 2007 .

[30]  R. H. Ritchie.  Plasma Losses by Fast Electrons in Thin Films , 1957 .

[31]  Randolph Kirchain,et al.  A roadmap for nanophotonics , 2007 .