Distributed Bragg reflector laser (1.8 \mu m) with 10 nm wavelength tuning range

Abstract

We report a 1.8 μm two-section distributed Bragg reflector laser using butt-jointed InGaAsP bulk material as the waveguide core layer. The threshold current is 17 mA and the output power is 8 mW on average. The threshold current, output power, and emitting wavelength dependences on temperature are measured. The obtained wavelength tuning range is 10 nm. This device has potential applications in simultaneous multiple-gas detection.

Low fabrication cost wavelength tunable WG-FP hybrid-cavity laser working over 1.7 μm

“…The hybrid cavity composed of an FP cavity and a square microcavity has been demonstrated for mode selection by enhancing the mode Q factor for hybrid mode between the WG and FP mode. Stable single-mode operation is realized by injecting currents to the square microcavity and the FP cavity sections at the same time [24] . However, the existing WG-FP hybrid cavity lasers are basically emitting at the C band, which are used in optical communication but are barely used in gas sensing.…”