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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 10 — May. 15, 2009
  • pp: 1597–1599

Wavelength, cross-angle, and core-diameter dependence of coupling efficiency in nanowire evanescent wave coupling

Wen He, Baojun Li, and Edwin Yue-Bun Pun  »View Author Affiliations

Optics Letters, Vol. 34, Issue 10, pp. 1597-1599 (2009)

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We report a systematic study on the dependence of nanowire evanescent wave coupling efficiency on wavelength, cross angle, and core diameter. An 800 nm diameter silica taper was used for light launching. Three poly(trimethylene terephthalate) nanowires with 640 nm , 790 nm , and 950 nm diameters were used for light transmission. Five wavelengths (visible, 473, 532, 650 nm ; near-IR, 1310 and 1550 nm ) were used as transmission signals. The dependence of coupling efficiency was investigated at cross angles from 90° to 0° with a 5° changing step. It is observed that the coupling efficiency is higher for longer wavelength of light, smaller cross angle, and smaller nanowire diameter.

© 2009 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Integrated Optics

Original Manuscript: February 27, 2009
Revised Manuscript: April 13, 2009
Manuscript Accepted: April 14, 2009
Published: May 14, 2009

Wen He, Baojun Li, and Edwin Yue-Bun Pun, "Wavelength, cross-angle, and core-diameter dependence of coupling efficiency in nanowire evanescent wave coupling," Opt. Lett. 34, 1597-1599 (2009)

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