Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Low-loss hybrid plasmonic modes guided by metal-coated dielectric wedges for subwavelength light confinement

Not Accessible

Your library or personal account may give you access

Abstract

The optical characteristics of a metal-coated dielectric wedge structure are investigated at a wavelength of 1550 nm. The effects of the metal/gap layers’ thicknesses, as well as the dimension of the dielectric wedge on the guided modes’ properties, are systematically analyzed. It is revealed that the characteristics of the fundamental quasi-TE and quasi-TM plasmonic modes supported by the configuration demonstrate similar trends against the variation of the metal layer thickness while exhibiting quite different behaviors with the change of the wedge size. By choosing appropriate physical dimensions, both modes could simultaneously achieve low modal loss and subwavelength field confinement, along with reasonable mode power inside the low-index gap region. Investigations on the directional coupling between adjacent identical waveguides indicate that ultralow crosstalk can be enabled by the quasi-TE mode, with the coupling length more than two orders of magnitude larger than that achieved by the plasmonic mode in conventional hybrid counterparts. The presented metal-coated dielectric wedge structures can be employed as important building blocks for a number of integrated nanophotonic components, and could also enable numerous applications at the subwavelength scale.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Hybrid wedge plasmon polariton waveguide with good fabrication-error-tolerance for ultra-deep-subwavelength mode confinement

Yusheng Bian, Zheng Zheng, Ya Liu, Jiansheng Liu, Jinsong Zhu, and Tao Zhou
Opt. Express 19(23) 22417-22422 (2011)

Low-loss light transmission in a rectangular-shaped hybrid metal trench at 1550 nm

Pengfei Yang, Zhigang Di, and Hongxing Xu
Opt. Express 21(14) 17053-17059 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved