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1.
公开(公告)号:US07295748B2
公开(公告)日:2007-11-13
申请号:US11462503
申请日:2006-08-04
申请人: Bo Chen , Xishe Liu , Yatao Yang , Bo Cai
发明人: Bo Chen , Xishe Liu , Yatao Yang , Bo Cai
IPC分类号: G02B6/00
CPC分类号: G02B6/266 , G02B6/3512 , G02B6/3552 , G02B6/3594
摘要: The invention relates to compensating for the wavelength dependent loss (WDL) in a variable optical attenuator (VOA) system by using a chromatic dispersion wedge, which is inserted between the mirror and the lens. Different wavelength components, e.g. shorter blue and longer red wavelengths, are redirected at different angles by the chromatic dispersion wedge and now arrive at the output fiber at different positions. Thus the smaller mode field diameter (MFD) or mode spot size of the blue light, overlaps more of the core of the output fiber by being closer thereto and now has less insertion loss (IL) as compared to a VOA without WDL compensator.
摘要翻译: 本发明涉及通过使用插入镜和透镜之间的色散楔来补偿可变光衰减器(VOA)系统中的波长相关损耗(WDL)。 不同的波长分量,例如 较短的蓝色和较长的红色波长通过色散楔形件以不同的角度重定向,现在在不同位置到达输出光纤。 因此,与没有WDL补偿器的VOA相比,蓝光的较小的模场直径(MFD)或模式光斑尺寸通过更靠近输出光纤的核心而更多地与现在具有较小的插入损耗(IL)。
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2.
公开(公告)号:US20070031104A1
公开(公告)日:2007-02-08
申请号:US11462503
申请日:2006-08-04
申请人: Bo Chen , Xishe Liu , Yatao Yang , Bo Cai
发明人: Bo Chen , Xishe Liu , Yatao Yang , Bo Cai
IPC分类号: G02B6/00
CPC分类号: G02B6/266 , G02B6/3512 , G02B6/3552 , G02B6/3594
摘要: The invention relates to compensating for the wavelength dependent loss (WDL) in a variable optical attenuator (VOA) system by using a chromatic dispersion wedge, which is inserted between the mirror and the lens. Different wavelength components, e.g. shorter blue and longer red wavelengths, are redirected at different angles by the chromatic dispersion wedge and now arrive at the output fiber at different positions. Thus the smaller mode field diameter (MFD) or mode spot size of the blue light, overlaps more of the core of the output fiber by being closer thereto and now has less insertion loss (IL) as compared to a VOA without WDL compensator.
摘要翻译: 本发明涉及通过使用插入在镜子和透镜之间的色散楔来补偿可变光衰减器(VOA)系统中的波长相关损耗(WDL)。 不同的波长分量,例如 较短的蓝色和较长的红色波长通过色散楔形件以不同的角度重定向,现在在不同位置到达输出光纤。 因此,与没有WDL补偿器的VOA相比,蓝光的较小的模场直径(MFD)或模式光斑尺寸通过更靠近输出光纤的核心而更多地与现在具有较小的插入损耗(IL)。
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