Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Toyohashi Tech researchers have developed a simple, low-loss waveguide for Surface Plasmon Polaritons (SPPs) that is applicable to nanoscale photonic integrated circuits on silicon

Schematic diagrams and electric field intensity distributions for (a) a multi-slit structure, (b) a disk array, and (c) no diffraction structure at the waveguide end.
Schematic diagrams and electric field intensity distributions for (a) a multi-slit structure, (b) a disk array, and (c) no diffraction structure at the waveguide end.

Abstract:
Surface plasmon polaritons (SPPs) are waves that propagate along the surface of a conductor and collective oscillation of electrons coupled with the optical field at the nano-scale beyond the diffraction limit of propagating light waves. Recently, there is increasing interest in SPPs as signal carriers in nanoscale integrated circuits to increase the degree of accumulation and reduce power consumption.

However, low-loss SPP waveguides with detectors have not been developed for applying to nanoscale integrated circuits.

Toyohashi Tech researchers have developed a simple, low-loss waveguide for Surface Plasmon Polaritons (SPPs) that is applicable to nanoscale photonic integrated circuits on silicon

Toyohashi, Japan | Posted on June 24th, 2014

Now, Mitsuo Fukuda and his group at Toyohashi Tech have developed a simple, low-loss waveguide for SPPs that is applicable to nanoscale integrated circuits.

A thin metal film deposited on a silicon substrate was terminated with a diffraction structure (a multi-slit or a metal disk array) at the end to guide the SPPs transmitted on the surface (air-metal interface) to the opposite side of the metal (metal-silicon interface). A Schottky barrier is formed at the metal-silicon interface, and the free electrons in the metal are excited by the guided SPPs and then cross over the barrier. The overflowing electrons result in observable photocurrents.

The waveguide developed in this research enabled the efficient propagation of SSPs in 1550-nm-wavelength bands (transparent to silicon) along the Au film surface, and the photocurrents were much larger than for waveguides without the diffraction structure (26 times for the grating structure and 10 times for the disk array).

This waveguide device is expected to contribute to nanoscale photonic integrated circuits on silicon.

Reference:

Authors: M. Fukuhara, M. Ota, H. Sakai, T. Aihara, Y. Ishii, and M. Fukuda.

Title of original paper: Low-loss waveguiding and detecting structure for surface plasmon polaritons.

Journal, volume, pages and year: Applied Physics Letters, 104, 081111 (2014).

Digital Object Identifier (DOI): 10.1063/1.4866792

Affiliations: Department of Electrical & Electronic information Engineering.

Website: www.photon.ee.tut.ac.jp

####

About Toyohashi University of Technology
Founded in 1976, Toyohashi University of Technology is a vibrant modern institute with research activities reflecting the modern era of advanced electronics, engineering, and life sciences.

For more information, please click here

Contacts:
Toyohashi University of Technology
1-1 Hibarigaoka, Tempaku
Toyohashi, Aichi Prefecture, 441-8580, JAPAN
Inquiries: Committee for Public Relations

Copyright © Toyohashi University of Technology

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Ultra-thin memory storage device paves way for more powerful computing January 17th, 2018

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

Physics

New exotic phenomena seen in photonic crystals: Researchers observe, for the first time, topological effects unique to an open system January 12th, 2018

Columbia engineers create artificial graphene in a nanofabricated semiconductor structure: Researchers are the first to observe the electronic structure of graphene in an engineered semiconductor; finding could lead to progress in advanced optoelectronics and data processing December 13th, 2017

Leti Develops Worlds First Micro-Coolers for CERN Particle Detectors: Leti Design, Fabrication and Packaging Expertise Extends to Very Large Scientific Instruments December 11th, 2017

Inorganic-organic halide perovskites for new photovoltaic technology November 6th, 2017

Chip Technology

Ultra-thin memory storage device paves way for more powerful computing January 17th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

New oxide and semiconductor combination builds new device potential: Researchers integrated oxide two-dimensional electron gases with gallium arsenide and paved the way toward new opto-electrical devices January 10th, 2018

STMicroelectronics Selects GLOBALFOUNDRIES 22FDX to Extend Its FD-SOI Platform and Technology Leadership : GFs FDX technology will enable ST to deliver high-performance, low-power products for next-generation consumer and industrial applications January 9th, 2018

Discoveries

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

Announcements

Ultra-thin memory storage device paves way for more powerful computing January 17th, 2018

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Ultra-thin memory storage device paves way for more powerful computing January 17th, 2018

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

Photonics/Optics/Lasers

New exotic phenomena seen in photonic crystals: Researchers observe, for the first time, topological effects unique to an open system January 12th, 2018

New oxide and semiconductor combination builds new device potential: Researchers integrated oxide two-dimensional electron gases with gallium arsenide and paved the way toward new opto-electrical devices January 10th, 2018

NRL improves optical efficiency in nanophotonic devices January 4th, 2018

Ocean Optics Grows Sales Organization with Executive Appointments: Henry Langston promoted, Christine Stannard joins spectral sensing product developer December 23rd, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project