Propagation characteristics of plasmonic metal stripe waveguide

Padmaja Bhanu B.; R. K. Shevgaonkar; A. N. Chandorkar

doi:10.1117/12.897855

23 August 2011 Propagation characteristics of plasmonic metal stripe waveguide

Padmaja Bhanu B., R. K. Shevgaonkar, A. N. Chandorkar

Proceedings Volume 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics; 81731L (2011) https://doi.org/10.1117/12.897855
Event: International Conference on Fiber Optics and Photonics, 2010, Guwahati, India

Abstract

The results concerning propagation characteristics of plasmonic metal stripe waveguide using FEM analysis are presented. The metal stripe waveguide consists of a layer of gold (Au) which is 55nm thick and 1μm wide on a glass substrate with air at the interface excited at 800nm wavelength. Various characteristics like modal confinement, propagation length, and dispersion were investigated. Finite Element analysis (FEM) for hybrid modes is used to solve for various bound modes. These bound modes could be either symmetric or asymmetric in nature. The symmetric modes can be characterized by electric field maxima inside the metal. As a result these modes die down very fast and propagate distances of few micrometers. The asymmetric modes can be characterized by electric field maxima at the interface and can propagate distances of tens of micrometers. For lower width of metal, propagation length of 100μm or more can also be observed. It was also observed that with increase in metal width higher order bound modes get characterized. There exists a definite relation between number of such modes and width of the metal stripe for a given excitation wavelength. Such modes tend asymptotically towards the characteristic of surface Plasmon wave similar to that energized at a metal-air interface. Based on all these parameters various characteristics of metal stripe waveguide are analyzed.

Citation Download Citation

Padmaja Bhanu B., R. K. Shevgaonkar, and A. N. Chandorkar "Propagation characteristics of plasmonic metal stripe waveguide", Proc. SPIE 8173, Photonics 2010: Tenth International Conference on Fiber Optics and Photonics, 81731L (23 August 2011); https://doi.org/10.1117/12.897855

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Metals

Waveguides

Wave propagation

Interfaces

Dispersion

Plasmonics

Signal attenuation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years