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We review the various progresses towards light control in a series of photonic crystal waveguides we studied by the internal light source method on GaAs or InP substrates, or theoretically. We focus mostly on the canonical few-missing rows waveguides. We address physics issues, and device issues as well, looking at demultiplexing functions, gain, lasing and spontaneous emission. In the end of the...
This paper investigates gain enhancement and mode singularities in photonic crystal waveguides with InGaAsP quantum wells. This paper also presents the measurement of the spectral gain of active photonic crystal waveguide near mini stopband regions: spectral analysis of the light gives the spatial gain
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