publication venue for 40 Gbit/s transmission in a silicon-compatible Al<inf>2</inf>O<inf>3</inf>:Er<sup>3+</sup> integrated optical amplifier 2009 Detecting spurious reflections in integrated photonic devices 2009 Higher gain in 977-nm-pumped Al<inf>2</inf>O<inf>3</inf>:Er<sup>3+</sup> integrated optical amplifiers 2009