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Membrane BH-DFB lasers emitting in 1500-1600 nm wavelength are realized with an air-bridge structure, and continuous wave operations up to moderately high temperature (80degC) were achieved under an optical pumping. The thermal resistance was estimated to be 11 K/mW, which is half that of membrane BH-DFB lasers fabricated by bonding on BCB coated InP substrate.
A room-temperature continuous-wave operation under optical pumping was demonstrated with GalnAsP/InP membrane DFB lasers prepared on an SOI substrate integrated with a rib-waveguide structure. A threshold pump power of 11.3 mW and a sub-mode suppression ratio of 29 dB were obtained with a cavity length of 140 mum and a stripe width of 1.5 mum. Light output was obtained through the SOI waveguide of...
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