发明授权
US08301033B2 LD driver with an improved falling edge of driving signal and optical transmitter providing the same
有权
LD驱动器具有改善的下降沿驱动信号和光发射机提供相同的功能
- 专利标题: LD driver with an improved falling edge of driving signal and optical transmitter providing the same
- 专利标题(中): LD驱动器具有改善的下降沿驱动信号和光发射机提供相同的功能
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申请号: US12752782申请日: 2010-04-01
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公开(公告)号: US08301033B2公开(公告)日: 2012-10-30
- 发明人: Keiji Tanaka
- 申请人: Keiji Tanaka
- 申请人地址: JP Osaka
- 专利权人: Sumitomo Electric Industries, Ltd.
- 当前专利权人: Sumitomo Electric Industries, Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Smith, Gambrell & Russell, LLP
- 优先权: JP2009-090999 20090403; JP2009-241688 20091020
- 主分类号: H04B10/04
- IPC分类号: H04B10/04
摘要:
An LD driver to generate an asymmetrical driving current with a relatively faster falling edge and an optical transmitter having the LD driver are disclosed. The LD driver includes a primary driver and the sub-driver connected in parallel to the primary driver. The primary driver converts the input signal or the delayed signal delayed from the input signal into the primary current. The sub-driver generates a symmetrical current tracing the input or the delayed signal, and an asymmetrical current formed by the OR operation between the input and delayed signals. The driving current is formed by adding the primary current, the symmetrical current and the asymmetrical current.