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The effects of intracavity reflections in active racetrack semiconductor resonator structures are studied. The incorporation of active material facilitates probing into effects stemming from even minute reflections, such as mode mismatching, which are almost undetectable in passive structures. The spectral response of these structures are studied by the transfer matrix method that models the racetrack resonator as a multicavity structure formed by the various optical paths induced by intracavity reflections. The signature of the structural and operational parameters on the spectral response enables the identification of the conditions for the appearance of interesting spectral properties such as mode splitting and Fano resonances.
Selected Topics in Quantum Electronics, IEEE Journal of (Volume:15 , Issue: 5 )
Date of Publication: Sept.-oct. 2009