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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 6 — Jun. 1, 2013
  • pp: 1426–1431

Enhanced coupling efficiency between dielectric and hybrid plasmonic waveguides

Peng Shi, Guangya Zhou, and Fook Siong Chau  »View Author Affiliations


JOSA B, Vol. 30, Issue 6, pp. 1426-1431 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001426


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Abstract

The modal distributions and properties of dielectric and hybrid plasmonic (HP) waveguides are investigated systematically. Their coupling efficiency through a direct coupling scheme is estimated by numerical simulation and the results are compared with values predicted by the Fresnel formula. The influence of various factors on the coupling efficiency between dielectric and HP waveguides, including interface scattering, absorption caused by light coupling to the surface plasmon polariton mode, and the mismatch between the two waveguide modes, is analyzed theoretically. A tapered coupling structure with linearly varying height and width of the silicon layer is proposed, with which extremely high coupling efficiency (94.4%) and good broadband coupling performance (above 90%) are demonstrated.

© 2013 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optical Devices

History
Original Manuscript: February 12, 2013
Revised Manuscript: April 3, 2013
Manuscript Accepted: April 4, 2013
Published: May 6, 2013

Citation
Peng Shi, Guangya Zhou, and Fook Siong Chau, "Enhanced coupling efficiency between dielectric and hybrid plasmonic waveguides," J. Opt. Soc. Am. B 30, 1426-1431 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-6-1426

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