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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 6 — Jun. 13, 2006

Double-clad photonic crystal fiber coupler for compact nonlinear optical microscopy imaging

Ling Fu and Min Gu  »View Author Affiliations

Optics Letters, Vol. 31, Issue 10, pp. 1471-1473 (2006)

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A 1 × 2 double-clad photonic crystal fiber coupler is fabricated by the fused tapered method, showing a low excess loss of 1.1 dB and a splitting ratio of 97/3 over the entire visible and near-infrared wavelength range. In addition to the property of splitting the laser power, the double-clad feature of the coupler facilitates the separation of a near-infrared single-mode beam from a visible multimode beam, which is ideal for nonlinear optical microscopy imaging. In conjunction with a gradient-index lens, this coupler is used to construct a miniaturized microscope based on two-photon fluorescence and second-harmonic generation. Three-dimensional nonlinear optical images demonstrate potential applications of the coupler to compact all-fiber and nonlinear optical microscopy and endoscopy.

© 2006 Optical Society of America

OCIS Codes
(110.2350) Imaging systems : Fiber optics imaging
(180.2520) Microscopy : Fluorescence microscopy

ToC Category:

Original Manuscript: January 1, 2006
Revised Manuscript: February 9, 2006
Manuscript Accepted: February 9, 2006

Virtual Issues
Vol. 1, Iss. 6 Virtual Journal for Biomedical Optics

Ling Fu and Min Gu, "Double-clad photonic crystal fiber coupler for compact nonlinear optical microscopy imaging," Opt. Lett. 31, 1471-1473 (2006)

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