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14 May 2010 Optical, thermal, and mechanical characterization of photonic crystal fibers: results and comparisons
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Abstract
Six photonic crystal fibers (PCFs) were characterized at NIT laboratory participating in COST Action 299 "FIDES", allowing for comparisons of properties and their dependence on fiber design. Samples tested included three nonlinear fibers with germanium doped core, two fibers with un-doped core and honeycomb photonic structure, and a "PANDAlike" PCF with a pair of large holes along an un-doped core. Tests included optical time domain reflectometer (OTDR) measurements, spectral loss, polarization mode dispersion (PMD) and its variations with temperature, fiber twist and axial strain. Elastooptic coefficient was measured for 2 fibers. Most samples exhibited high PMD, up to 3 ps/m. PMD was usually reduced by twisting the fiber, but twist sensitivity varied widely. The "PANDA-like" PCF, however, had PMD virtually unaffected by both twist and tensile strain; the latter property made it different from true PANDA fiber tested for comparison. Intensity of backscattering in each PCF was stronger compared to a standard telecom single mode fiber (SMF), by a factor up to 110x.
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Krzysztof Borzycki, Jens Kobelke, Kay Schuster, and Jan Wójcik "Optical, thermal, and mechanical characterization of photonic crystal fibers: results and comparisons", Proc. SPIE 7714, Photonic Crystal Fibers IV, 77140X (14 May 2010); doi: 10.1117/12.853904; https://doi.org/10.1117/12.853904
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