Integrated Photonics Research and Applications/Nanophotonics for Information Systems 2005
DOI: 10.1364/npis.2005.nfb4
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Effect of Heat Treatment on Optical Characteristics of Highly Nonlinear Optical Fiber Doped with PbTe Semiconductor Quantum Dots

Abstract: Abstract:The effect of heat treatment of highly nonlinear optical fiber doped with the PbTe nanoparticles on absorption characteristics was investigated. The excitonic absorption peaks near 687 and 1055nm were found linearly red-shifted with temperature.

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“…3. The difference in the peak wavelengths of the absorption bands of the two fibers was attributed to the size effect of PbTe SQDs embedded in glass matrix, smaller the average size, shorter the peak wavelength [28,[32][33][34]. The observed bimodal distribution of PbTe SQDs in the core region of the fabricated fiber preforms and fibers may be due to the non-uniform distribution of the GeO 2 in the core.…”
Section: Resultsmentioning
confidence: 96%
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“…3. The difference in the peak wavelengths of the absorption bands of the two fibers was attributed to the size effect of PbTe SQDs embedded in glass matrix, smaller the average size, shorter the peak wavelength [28,[32][33][34]. The observed bimodal distribution of PbTe SQDs in the core region of the fabricated fiber preforms and fibers may be due to the non-uniform distribution of the GeO 2 in the core.…”
Section: Resultsmentioning
confidence: 96%
“…The absorption bands at 687 nm and 1055 nm of the fiber made by adopting the atomization process and the absorption bands at 712 nm, 775 nm, and 1120 nm of the fiber by the soaking process (Fig. 4) are attributed to quantum confinement of PbTe SQDs in the fiber core [28][29][30][31][32][33]. The absorption bands around 700 nm and 1100 nm of the fiber samples showed two distinguishable excitonic peaks and these peaks of the PbTe SQDs doped germano-silicate glass optical fibers were well matched with the two groups of different sized PbTe SQDs as shown in Fig.…”
Section: Resultsmentioning
confidence: 98%
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