Mid-infrared spectroscopic imaging enabled by an array of Ge-filled waveguides in a microstructured optical fiber probe

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...

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Bibliographic Details
Published in:Optics express 2014-11, Vol.22 (23), p.28459-28466
Main Authors: Ji, Xiaoyu, Zhang, Baigang, Krishnamurthi, Mahesh, Badding, John, Gopalan, Venkatraman
Format: Article
Language:English
Subjects:
Adipose Tissue - anatomy & histology
Animals
Cattle
Germanium - chemistry
Muscles - anatomy & histology
Optical Fibers
Spectroscopy, Fourier Transform Infrared
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.028459