Details

Autor(en) / Beteiligte

• Zhang, Meiling
• Zhang, Weiwei
• Wang, Fei
• Zhao, Dan
• Qu, Chunyang
• Wang, Xibin
• Yi, Yunji
• Cassan, Eric
• Zhang, Daming

Titel

High-gain polymer optical waveguide amplifiers based on core-shell NaYF4/NaLuF4: Yb3+, Er3+ NPs-PMMA covalent-linking nanocomposites

Ist Teil von

• Scientific reports, 2016-11, Vol.6 (1), p.36729-36729, Article 36729

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2016

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Abstract Waveguide amplifiers have always been significant key components for optical communication. Unfortunately, the low concentration of rare earth ions doped in the host material and the inadequate optimization of the waveguide structure have been the common bottleneck limitations. Here, a novel material, NaYF 4 /NaLuF 4 : 20% Yb 3+ , 2% Er 3+ nanoparticle-Polymeric Methyl Methacrylate covalent-linking nanocomposite, was synthesized. The concentrations of Er 3+ and Yb 3+ doping increased an order of magnitude. Under a 980 nm laser excitation, highly efficient emission at 1.53 μm was obtained. The characteristic parameters of the single mode waveguide were carefully designed and optimized by using a finite difference method. A formulized iteration method is presented for solving the rate equations and the propagation equations of the EYCDWA, and both the steady state behavior and the gain were numerically simulated. The optimal Er 3+ and Yb 3+ concentrations are 2.8 × 10 26 m −3 and 2.8 × 10 27 m −3 , and the optimal waveguide length is 1.3 cm. Both theoretical and experimental results indicated that, for an input signal power of 0.1 mW and a pump power of 400 mW, a net gain of 15.1 dB at 1530 nm is demonstrated. This result is the highest gain ever reported in polymer-based waveguide amplifiers doped with inorganic Er 3+ -Yb 3+ codoped nanocrystals.