Raman probes based on optically-poled double-clad fiber and coupler | Zendy

Anna Chiara Brunetti | Zendy; Walter Margulis | Zendy; Karsten Rottwitt | Zendy

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Raman probes based on optically-poled double-clad fiber and coupler

Author(s) -

Anna Chiara Brunetti,

Walter Margulis,

Karsten Rottwitt

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.028563

Subject(s) - materials science , optics , raman spectroscopy , double clad fiber , dichroic glass , optical fiber , fiber laser , cladding (metalworking) , laser , fiber , optoelectronics , photonic crystal fiber , polarization maintaining optical fiber , fiber optic sensor , wavelength , physics , metallurgy , composite material

Two fiber Raman probes are presented, one based on an optically-poled double-clad fiber and the second based on an optically-poled double-clad fiber coupler respectively. Optical poling of the core of the fiber allows for the generation of enough 532nm light to perform Raman spectroscopy of a sample of dimethyl sulfoxide (DMSO), when illuminating the waveguide with 1064nm laser light. The Raman signal is collected in the inner cladding, from which it is retrieved with either a bulk dichroic mirror or a double-clad fiber coupler. The coupler allows for a substantial reduction of the fiber spectral background signal conveyed to the spectrometer.

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