18711987. SEMICONDUCTOR LASER AND MODULE DEVICE (NIPPON TELEGRAPH AND TELEPHONE CORPORATION)
SEMICONDUCTOR LASER AND MODULE DEVICE
Organization Name
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Inventor(s)
Manabu Mitsuhara of Tokyo (JP)
Wataru Kobayashi of Tokyo (JP)
SEMICONDUCTOR LASER AND MODULE DEVICE
This abstract first appeared for US patent application 18711987 titled 'SEMICONDUCTOR LASER AND MODULE DEVICE
Original Abstract Submitted
A semiconductor laser of the present invention includes a first cladding layer, an active layer, and a second cladding layer sequentially provided on a substrate, includes a ridge portion arranged in a waveguide direction in the second cladding layer and a heater arranged near the ridge portion, and has an oscillation wavelength of 1.6 μm to 2.4 μm. Furthermore, a first guide layer and a second guide layer are provided between the first cladding layer and the active layer and between the active layer and the second cladding layer, respectively, a diffraction grating is provided at a boundary between the first cladding layer and the first guide layer or a boundary between the second cladding layer and the second guide layer, and an insulating film is provided on a surface of the second guide layer excluding the ridge portion, and the heater is arranged on the insulating film.
