Luminescence of PbS quantum dots on a silica microstructured fiber

Luis C. Barbosa; Enver F. Chillcce; Cristiano M. Cordeiro

doi:10.1117/12.837489

28 April 2010 Luminescence of PbS quantum dots on a silica microstructured fiber

Luis C. Barbosa, Enver F. Chillcce, Cristiano M. Cordeiro

Proceedings Volume 7714, Photonic Crystal Fibers IV; 771408 (2010) https://doi.org/10.1117/12.837489
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

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.

Citation Download Citation

Luis C. Barbosa, Enver F. Chillcce, and Cristiano M. Cordeiro "Luminescence of PbS quantum dots on a silica microstructured fiber", Proc. SPIE 7714, Photonic Crystal Fibers IV, 771408 (28 April 2010); https://doi.org/10.1117/12.837489

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