CW operation of 1.5 ~ 1.6 μm wavelength GaInAsP/InP buried-heterostructure integrated twin-guide laser with distributed Bragg reflector

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Abstract
A 1.5 ~ 1.6 μm GaInAsP/InP buried-heterostructure integrated twin-guide laser with distributed Bragg reflector (BH-DBR-ITG laser) was realised, for the first time, and CW operation was achieved up to 255 K. Single-wavelength operation was obtained at temperatures between 228 K and 245 K with the temperature dependence of lasing wavelength of 10 Å/deg. At 233 K, the threshold current, the output power and the differential quantum efficiency were 110 mA, 2.2 mW and 4.8%/facet, respectively.