Open AccessMid-infrared spectroscopic imaging enabled by an array of Ge-filled waveguides in a microstructured optical fiber probe
Author(s) -
Xiaoyu Ji,
Baigang Zhang,
M. Krishnamurthi,
John V. Badding,
Venkatraman Gopalan
Publication year - 2014
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.22.028459
Subject(s) - materials science , optics , optical fiber , infrared , fourier transform infrared spectroscopy , fiber , optoelectronics , waveguide , fourier transform spectroscopy , transmission (telecommunications) , microstructured optical fiber , spectroscopy , photonic crystal fiber , wavelength , fiber optic sensor , polarization maintaining optical fiber , physics , quantum mechanics , composite material , electrical engineering , engineering
We demonstrate mid-infrared spectroscopic imaging using a unique optical fiber probe consisting of an array of Ge waveguide cores embedded in a silica fiber matrix. Biological tissue slices are characterized to illustrate its potential endoscopic uses. The fiber probe based transmission measurements show excellent agreement with the result obtained from standard Fourier Transform Infrared spectroscopy transmission measurements in the wavelength range of 3289.8 nm to 3383.3 nm, where fat and muscle tissues could be spectroscopically distinguished.