Fundamental-mode cutoff in liquid-filled Y-shaped microstructured fibers with Ge-doped core

We report on the cutoff characteristics of a Ge-doped Y-shaped microstructured fiber in which the holes are filled with a liquid of refractive index higher than silica but lower than the Ge-doped core. It is found that the cutoff wavelength was very sensitive to temperature variations as a result of...

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Bibliographic Details
Published in:Optics letters 2008-11, Vol.33 (22), p.2578-2580
Main Authors: TORRES-PEIRO, S, DIEZ, A, CRUZ, J. L, ANDRES, M. V
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fiber optics
Fundamental areas of phenomenology (including applications)
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optics
Physics
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Sensors, gyros
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Summary:We report on the cutoff characteristics of a Ge-doped Y-shaped microstructured fiber in which the holes are filled with a liquid of refractive index higher than silica but lower than the Ge-doped core. It is found that the cutoff wavelength was very sensitive to temperature variations as a result of the refractive index changes of the liquid. The basic properties of such a fiber permit the fabrication of wideband tunable short-pass filters, as well as temperature sensors with high sensitivity. A temperature sensitivity of 25 nm/degrees C is reported.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.33.002578