Optical amplification in Er/Yb silicate strip loaded waveguide

An Er/Yb silicate strip loaded waveguide was fabricated for optical amplification purpose. A 2.4- μ m-wide SiO 2 strip was deposited on top of the Er/Yb silicate active layer. Experiment data showed a 5.5dB signal enhancement in a 7.8-mm-long waveguide pumped by a laser of 372mW at 1480nm. The signa...

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Bibliographic Details
Published in:Applied physics letters 2011-10, Vol.99 (16), p.161115-161115-3
Main Authors: Guo, Ruimin, Wang, Xingjun, Zang, Kai, Wang, Bing, Wang, Lei, Gao, Linfei, Zhou, Zhiping
Format: Article
Language:English
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Summary:An Er/Yb silicate strip loaded waveguide was fabricated for optical amplification purpose. A 2.4- μ m-wide SiO 2 strip was deposited on top of the Er/Yb silicate active layer. Experiment data showed a 5.5dB signal enhancement in a 7.8-mm-long waveguide pumped by a laser of 372mW at 1480nm. The signal is not saturated and can be further enhanced by increasing pumping power and decreasing waveguide loss. The strong red light emission at 660nm was also observed due to excited state absorption and Yb 3+ participated energy transfer upconversion processes.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3655330