专利汇可以提供Semiconductor optical amplifier专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain this optical amplifier which can be manufactured easily, whose coupling efficiency with reference to a single-mode fiber is good and whose characteristic is excellent by a method wherein a window region is constituted of a material whose refractive index is nearly equal to an equivalent refractive index of an active region.
CONSTITUTION: The following are provided: a stripe-shaped active region 15 filled with a semiconductor layer having a confinement effect with reference to a signal beam; a window region 16 which is connected to one end or both ends of the active region 15 and which is transparent with reference to the signal beam. In this case, the window region 16 is constituted of a material whose refractive index is nearly equal to an equivalent refractive index of the active region 15. Thereby, a reflection is not caused at a boundary part 19 of the active region and the window region; a prescribed value or lower is obtained as an average end-face reflectance of an optical amplifier; a prescribed interfiber optical amplification gain can be obtained with reference to an incident beam.
COPYRIGHT: (C)1990,JPO&Japio,下面是Semiconductor optical amplifier专利的具体信息内容。
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