Full text loading...
SEM images of a ridge-waveguide laser coupled with a microcylindrical cavity. (a) Cross-sectional image of a ridge-waveguide. (b) Bird’s-eye view of an integrated microcylindrical cavity.
(Upper part) Dependence of lasing spectra on current injected into the ridge waveguide at 100 K, where current is not injected into the integrated microcylindrical cavity. Current is increased from 1.05 to 1.5 times higher than the threshold current . (Inset) Lasing spectrum of a ridge-waveguide laser without a microcylindrical cavity at . (Lower part) Calculated relative transmission of a ridge waveguide using the given refractive indices.
Mode switching operation among coupled-cavity modes by increasing current injected into the microcylindrical cavity gradually from 0 to 600 mA, where current injected into the ridge-waveguide was kept constant . These spectra were measured at 100 K.
Article metrics loading...