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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 4 — Feb. 21, 2005
  • pp: 1193–1201

Light transmission in multiple or single subwavelength trefoil channels of microstructured fibers

J.M. Moison, A.M. Apetrei, J.A. Levenson, G. Mélin, Ph. Pédeboscq, A. Fleureau, S. Lempereur, and L. Gasca  »View Author Affiliations

Optics Express, Vol. 13, Issue 4, pp. 1193-1201 (2005)

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We evaluate the trefoil channels present between the holes of microstructured fibers as a potential dense array of small waveguides. In channels with an inner radius of 330nm, calculations indicate possible propagation with a mode waist of ~350nm at λ=670nm, near to the diffraction limit. Actual measurements have been performed on a 1-meter fiber section, with injection by a microlensed fiber and mapping of output by near-field scanning optical microscopy. They show that light can be output in individual channels or in several of them, depending on the injection. The observed waist is ~500nm, possibly due to experimental widening. Estimated propagation losses are <20dB/m. Since each channel occupies only 2µm2, this structure opens a way to dense parallel optical processing.

© 2005 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(130.2790) Integrated optics : Guided waves
(250.5300) Optoelectronics : Photonic integrated circuits
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Research Papers

Original Manuscript: January 6, 2005
Revised Manuscript: January 4, 2005
Published: February 21, 2005

J. M. Moison, A. M. Apetrei, J. A. Levenson, G. Melin, Ph. Pedeboseq, A. Fleureau, S. Lempereur, and L. Gasca, "Light transmission in multiple or single subwavelength trefoil channels of microstructured fibers," Opt. Express 13, 1193-1201 (2005)

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