发明授权
- 专利标题: Frequency-stabilized semiconductor laser oscillator
- 专利标题(中): 频率稳定的半导体激光振荡器
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申请号: US598199申请日: 1984-04-09
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公开(公告)号: US4669086A公开(公告)日: 1987-05-26
- 发明人: Kazuhisa Kaede , Hiroyoshi Rangu
- 申请人: Kazuhisa Kaede , Hiroyoshi Rangu
- 申请人地址: JPX Tokyo
- 专利权人: NEC Corporation
- 当前专利权人: NEC Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX58-63182 19830411
- 主分类号: H01S5/00
- IPC分类号: H01S5/00 ; H01S3/137 ; H01S5/0625 ; H01S5/227 ; H01S3/096
摘要:
A frequency-stabilized semiconductor laser oscillator in which a control signal derived from a modulation signal is applied to a second optical waveguide adjacent the first optical waveguide in order to make the overall optical path between both waveguides constant despite variations in the refractive index of the optical path in the first optical waveguide. The control signal may be a current signal derived by shifting the phase of the variation of the current of the modulation signal with respect to time, or a voltage signal derived by shifting the phase of the variation of the voltage of the modulation signal with respect to time. If a current control signal is used, the compensation mechanism is an increase in the carrier density in a second optical waveguide. If a voltage control signal is used, the compensation mechanism is an electro-optic variation of the refractive index in the second optical waveguide.
公开/授权文献
- US5809538A DRAM arbiter for video decoder 公开/授权日:1998-09-15