Mr. Ge Yuan, an undergraduate in our group, as a first author, published a paper in Optics Communications 284 (2011) 5167-5170, following the success publication of another paper in Journal of Applied Physics 108 (2010) 013506. Small size and high optical gain waveguide amplifier is still our goal for silicon photonics integration. The paper investigatedthe gain characteristics ofErxY2-xSiO5waveguide amplifiers by solving rate equations and propagation equations. A maximum 16dB gain at 1mm waveguide length is demonstrated, indicating it is sought candidate material for compact waveguide amplifiers and emitters insiliconphotonics integration.


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