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Proceedings Paper

Luminescence of PbS quantum dots on a silica microstructured fiber
Author(s): Luis C. Barbosa; Enver F. Chillcce; Cristiano M. Cordeiro
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Paper Abstract

In this work, we report results of lead sulfide (PbS) quantum dots (QDs) luminescence spectra evolution during the QDs spread process around the core of silica micro-structured (MS) fibers. These QDs are excited, via evanescent field effect, with a 532nm or 785nm laser guided by the MS-fiber cores. The PbS-core QDs of different sizes (originally immersed in Toluene) with emission bands around 877 nm (PbS877), 1160 nm (PbS1160) and 1474 nm (PbS1474) were inserted inside the silica MS-fiber structure by using an N2 gas pressure system. The broadband luminescence spectra varying from around 1000 nm to 1600 nm were obtained by using QDs mixtures impregnated around MS-fiber core surfaces. This QDs spread technique and the PbS QDs broadband luminescence spectra results could have potential applications in optical amplifier,sensor and nonlinear optical fiber loop mirror devices.

Paper Details

Date Published: 28 April 2010
PDF: 10 pages
Proc. SPIE 7714, Photonic Crystal Fibers IV, 771408 (28 April 2010); doi: 10.1117/12.837489
Show Author Affiliations
Luis C. Barbosa, Univ. Estadual de Campinas (Brazil)
Enver F. Chillcce, Univ. Estadual de Campinas (Brazil)
Cristiano M. Cordeiro, Univ. Estadual de Campinas (Brazil)

Published in SPIE Proceedings Vol. 7714:
Photonic Crystal Fibers IV
Kyriacos Kalli; Waclaw Urbanczyk, Editor(s)

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