发明申请
- 专利标题: Optical Device
- 专利标题(中): 光学设备
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申请号: US12224209申请日: 2007-02-19
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公开(公告)号: US20090016201A1公开(公告)日: 2009-01-15
- 发明人: Hideki Kondo , Naoki Mori
- 申请人: Hideki Kondo , Naoki Mori
- 申请人地址: JP Anan-shi
- 专利权人: Nichia Corporation
- 当前专利权人: Nichia Corporation
- 当前专利权人地址: JP Anan-shi
- 优先权: JP2006-045253 20060222; JP2006-047740 20060224
- 国际申请: PCT/JP2007/052987 WO 20070219
- 主分类号: G11B7/00
- IPC分类号: G11B7/00
摘要:
To provide an optical disc device 1, and similar, equipped with a new mechanism to reduce laser light noise due to optical feedback.In an optical disc device 1 in which a laser diode is driven by a high frequency modulation method, optical feedback is returned to the laser diode at a timing at which the phase of the injected carrier density is within one of the following ranges: (1) equal to or greater than the peak phase of the injected carrier density of the laser diode, and equal to or less than the peak phase of the injected carrier density of the laser diode plus 3π/8 (radians); or (2) equal to or greater than the peak phase of the injected carrier density of the laser diode plus 9π/8 (radians), and equal to or less than the peak phase of the injected carrier density of the laser diode plus 2π (radians).
公开/授权文献
- US08054735B2 Optical device 公开/授权日:2011-11-08
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