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

Optics Letters
Ling Fu, Min Gu

Abstract

A 1 x 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.

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Citations

Nov 22, 2008·Journal of Biomedical Optics·Alexandre DupuisMaksim Skorobogatiy
Apr 5, 2011·Journal of Biomedical Optics·Gangjun Liu, Zhongping Chen
May 31, 2007·Journal of Microscopy·L Fu, M Gu
Jan 1, 2012·IEEE Journal of Selected Topics in Quantum Electronics : a Publication of the IEEE Lasers and Electro-optics Society·Jeffrey J FieldJeff A Squier
Oct 24, 2006·Advanced Drug Delivery Reviews·Martin OheimRobert H Chow
Dec 15, 2007·Nature Reviews. Drug Discovery·Andrew Bullen
Jun 10, 2009·Optics Express·Hongchun Bao, Min Gu
Feb 23, 2010·Optics Express·Hongchun BaoMin Gu
Jan 25, 2011·Biomedical Optics Express·Youbo ZhaoRobert J Gordon
Apr 7, 2010·Optics Letters·Hongchun BaoMin Gu
Dec 25, 2012·Optics Express·Anna Chiara BrunettiKarsten Rottwitt
Jul 1, 2010·Optics Express·Simon Lemire-RenaudCaroline Boudoux
Nov 15, 2011·Biomedical Optics Express·Simon Lemire-RenaudCaroline Boudoux
Oct 25, 2013·Biomedical Optics Express·Richa MittalEric O Potma

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