| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiwavelength laser diode, in which a metal reflective layer is formed in order to simplify a fabrication process thereof as well as enhance productivity, and which has a high reflectivity uniformly in a multiwavelength range. SOLUTION: A multiwavelength laser diode comprises: an oscillating structure which consists of a semiconductor substrate, a lower cladding layer, an active layer, and an upper cladding layer having a ridge, in which the layers are sequentially formed on the semiconductor substrate; a first metal layer which is made of a metal having a high reflectivity in a high wavelength range including a predetermined wavelength and higher and is formed on a first side face of the oscillating structure on one end side of the ridge; and a second metal layer which is made of a metal having a high reflectivity in a low wavelength range lower than the predetermined wavelength and is formed on the first metal layer. COPYRIGHT: (C)2006,JPO&NCIPI
|
