Broad-band fluorescent all-fiber source based on microstructured optical fibers

The present work demonstrates a miniature all-fiber optic fluorescence source on the basis of organic dyes. A capillary of fused silica has been used to keep the Rhodamine 6G dissolved in glycerine at one end of which a tapered optical fiber is inserted to receive the useful signal. The fluorescence medium is side excited with a CW laser radiation at 532 nm by a fiber taper. The functioning of the system is demonstrated using a conventional optical fiber, a photonic crystal fiber and a hollow-core fiber. Full Text: PDF References S. James, R. Tatam, "Optical fibre long-period grating sensors: characteristics and application", Meas. Sci. Technol. 14(5), R49, (2003). CrossRef Y.P. Wang, L. Xiao, D.Wang, W. Jin, "Highly sensitive long-period fiber-grating strain sensor with low temperature sensitivity", Opt. Lett. 31(23), 3414, (2006). CrossRef Y. Wang, W. Jin, J. Ju, H. Xuan, H. Ho, L. Xiao, D. Wang, "Long period gratings in air-core photonic bandgap fibers", Opt. Express 16(4), 2784, (2008). CrossRef L. Rindorf, O. Bang, "Highly sensitive refractometer with a photonic-crystal-fiber long-period grating", Opt. Lett. 33(6), 563, (2008). CrossRef G. Durana, J. Gomez, G. Aldabaldetreku, J. Zubia, A. Montero, I. Saez de Ocariz, "Assessment of an LPG mPOF for Strain Sensing", IEEE Sens. J. 12(8), 2668, (2012). CrossRef D.Vezenov, B.Mayers, D.Wolfe, G.Whitesides, "Integrated fluorescent light source for optofluidic applications", App. Phys. Lett. 86(4), 041104, (2005). CrossRef B.Mayers, D.Vezenov, V.Vullev, G.Whitesides, "Arrays and Cascades of Fluorescent Liquid?Liquid Waveguides: Broadband Light Sources for Spectroscopy in Microchannels", Anal. Chem. 77(5), 1310, (2005). CrossRef J.M. Lim, S-H. Kim, J-H. Choi, S.-M. Yang, "Fluorescent liquid-core/air-cladding waveguides towards integrated optofluidic light sources", Lab Chip 8(9), 1580, (2008) CrossRef V. Vladev, T. Eftimov, Union of Scientists in Bulgaria-Plovdiv, 16, 73, (2014).