首页>
外国专利>
DIRECT POLARIZATION AND MODULATION LIGHT-SOURCE CONTROL SYSTEM, ITS APPARATUS, INTEGRATED SEMICONDUCTOR DEVICE, ITS DRIVING METHOD AND OPTICAL COMMUNICATION METHOD USING IT
DIRECT POLARIZATION AND MODULATION LIGHT-SOURCE CONTROL SYSTEM, ITS APPARATUS, INTEGRATED SEMICONDUCTOR DEVICE, ITS DRIVING METHOD AND OPTICAL COMMUNICATION METHOD USING IT
展开▼
机译:直接极化和调制光源控制系统,其装置,集成半导体器件,其驱动方法和使用它的光通信方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
PURPOSE: To obtain a direct polarization and modulation light-source control system or apparatus in which a dynamic wavelength change is small and in which a modulation state can be kept well, to obtain an integrated semiconductor device, to obtain its driving method and to obtain an optical communication system using it. ;CONSTITUTION: A semiconductor laser 1-1 is used as a light source for optical communication. The semiconductor laser 1-1 has a structure in which a current flowing to a part of an optical waveguide is modulated and in which two oscillation and polarization modes having different planes of polarization are switched. The semiconductor laser is provided with a means 102 by which two orthogonal polarized waves of output light from the semiconductor laser 1-1 are separated and with means 1-3-1, 1-3-2 which individually receive two separated orthogonal polarized waves. By using signals from the respective receiving means 1-3-1, 1-3-2, an injection current to the semiconductor laser 1-1 is feedback-controlled.;COPYRIGHT: (C)1995,JPO
展开▼