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1. 发明授权

US07457544B1 Single channel four-port group delay compensation equalizer 有权
标题翻译：单通道四端口群延时补偿均衡器
公开(公告)号：US07457544B1
公开(公告)日：2008-11-25
申请号：US10990688
申请日：2004-11-16
申请人： John Feng , Xuehua Wu , Sanjai Parthasarathi , Giovanni Bararossa
发明人： John Feng , Xuehua Wu , Sanjai Parthasarathi , Giovanni Bararossa
IPC分类号： H04J14/02
CPC分类号： G02B6/2937 , G02B6/29394 , H04J14/02
摘要： A group delay compensation equalizer is disclosed that employs a single channel four-port WDM device for compensating the group delay experienced by a plurality of wavelengths transmitted over different paths. The transmission differential between two wavelengths is compensated by transmitting the two wavelengths through two different paths where the fiber length in reflecting the second wavelength is equal to the transmission time difference between the two wavelengths. The single channel four-port group delay equalizer effectively provides a unidirectional signal flow, as compared to the conventional equalizer that transmits optical signals bi-directionally. The present invention reduces the cost of a group delay equalizer by simplifying the use of multiple three-port WDM devices into a single channel four-port WDM device. The present invention further reduces the number of alignments required to just one on the transmission side since the group delay equalizer now has one transmission output, rather than two transmission outputs in a prior solution.
摘要翻译：公开了一种组延迟补偿均衡器，其采用单通道四端口WDM设备来补偿由不同路径上发送的多个波长所经历的群延迟。两个波长之间的传输差异通过将两个波长传输通过两个不同的路径进行补偿，其中反射第二波长的光纤长度等于两个波长之间的传输时间差。与传统的双向信号均衡器相比，单通道四端口组延迟均衡器有效提供了单向信号流。本发明通过简化将多个三端口WDM设备用于单通道四端口WDM设备来降低组延迟均衡器的成本。本发明进一步减少了传输侧上只有一个所需的对准次数，因为组延迟均衡器现在具有一个传输输出，而不是在先前的解决方案中的两个传输输出。

2. 发明授权

US07454143B1 Reconfigurable thin film based DWDM devices for reconfigurable add-drop optical systems 失效
标题翻译：可重配置的基于薄膜的DWDM设备，用于可重配置的分插光学系统
公开(公告)号：US07454143B1
公开(公告)日：2008-11-18
申请号：US10736818
申请日：2003-12-15
申请人： Xuehua Wu , Mingjun Zhao , John Feng , Giovanni Barbarossa
发明人： Xuehua Wu , Mingjun Zhao , John Feng , Giovanni Barbarossa
IPC分类号： H04J14/02
CPC分类号： G02B26/02 , G02B5/003 , H04J14/0206 , H04J14/0209 , H04J14/021
摘要： A reconfigurable thin film based dense wavelength division multiplexing (DWDM) device is described for hitless switching of wavelengths by employing a reconfigurable filtering device. The reconfigurable filtering device is based on a mechanical switching of a filtering chip which has a thin film coated a first one-half of a first face for interference wavelength filtering and has a gold-mirror coated on a second one-half of the first face for high reflection.
摘要翻译：描述了一种基于可重构薄膜的密集波分复用（DWDM）器件，用于通过采用可重构滤波器件进行无源切换波长。可重构滤波装置基于滤波芯片的机械切换，该滤波芯片具有涂覆有用于干涉波长滤波的第一面的第一半部分的薄膜，并且具有涂覆在第一面的第二半部上的金镜为高反射。

3. 发明授权

US07340130B1 Method for assembly of multi-ports optical apparatus 失效
标题翻译：多端口光学装置的组装方法
公开(公告)号：US07340130B1
公开(公告)日：2008-03-04
申请号：US11247779
申请日：2005-10-11
申请人： Xuehua Wu , Mingjun Zhao , John Feng
发明人： Xuehua Wu , Mingjun Zhao , John Feng
IPC分类号： G02B6/34
CPC分类号： G02B6/29361 , G02B6/2937 , G02B6/327
摘要： The present invention describes a structure and method for a multi-ports WDM device for compensating the filter distortion while reducing insertion loss. The multi-ports WDM device comprises a 4-fiber collimator having a grin lens and a 2-fiber collimator having a lens where the focal plane of the second lens is shorter than the focal plane of the first grin lens Ands with aspheric surface. When a light signal travels through the first lens in the 4-fiber collimator to a filter, the film on the filter causes distortion to the light signal resulting in a large insertion loss. To compensate for the insertion loss, the lens on the 2-fiber collimator has a aspheric function and a shorter focal plane than the grin lens on the 4-fiber collimator. The type of grin lens used in the 4-fiber collimator is different than the lens used in the 2-fiber collimator. Effectively, the lens in the 2-fiber collimator operates to de-focus a light signal relative to the grin lens in the 4-fiber collimator.
摘要翻译：本发明描述了一种用于在减少插入损耗的同时补偿滤波器失真的多端口WDM设备的结构和方法。多端口WDM设备包括具有微光透镜的4光纤准直器和具有透镜的双光纤准直器，其中第二透镜的焦平面比第一微光透镜的焦平面短且具有非球面。当光信号通过4光纤准直器中的第一透镜到达滤光器时，滤光器上的膜导致光信号失真，导致大的插入损耗。为了补偿插入损耗，2光纤准直仪上的透镜具有非球面功能和比4光纤准直仪上的微光透镜更短的焦平面。在4光纤准直仪中使用的咧嘴透镜的类型与2光纤准直仪中使用的镜头不同。有效地，2光纤准直仪中的透镜操作以将相对于4光纤准直器中的微光透镜的光信号去焦点。

4. 发明授权

US07171073B1 Structure and method for multi-ports optical apparatus 有权
标题翻译：多端口光学设备的结构和方法
公开(公告)号：US07171073B1
公开(公告)日：2007-01-30
申请号：US11247052
申请日：2005-10-11
申请人： Xuehua Wu , Mingjun Zhao , John Feng
发明人： Xuehua Wu , Mingjun Zhao , John Feng
IPC分类号： G02B6/293 , G02B6/32 , H04J14/02
CPC分类号： G02B6/29389 , G02B6/2937
摘要： The present invention describes a structure and method for a multi-ports WDM device for compensating the filter distortion while reducing insertion loss. The multi-ports WDM device comprises a 4-fiber collimator having a grin lens and a 2-fiber collimator having a lens where the focal plane of the second lens is shorter than the focal plane of the first grin lens Ands with aspheric surface. When a light signal travels through the first lens in the 4-fiber collimator to a filter, the film on the filter causes distortion to the light signal resulting in a large insertion loss. To compensate for the insertion loss, the lens on the 2-fiber collimator has a aspheric function and a shorter focal plane than the grin lens on the 4-fiber collimator. The type of grin lens used in the 4-fiber collimator is different than the lens used in the 2-fiber collimator. Effectively, the lens in the 2-fiber collimator operates to de-focus a light signal relative to the grin lens in the 4-fiber collimator.
摘要翻译：本发明描述了一种用于在减少插入损耗的同时补偿滤波器失真的多端口WDM设备的结构和方法。多端口WDM设备包括具有微光透镜的4光纤准直器和具有透镜的双光纤准直器，其中第二透镜的焦平面比第一微光透镜的焦平面短且具有非球面。当光信号通过4光纤准直器中的第一透镜到达滤光器时，滤光器上的膜导致光信号失真，导致大的插入损耗。为了补偿插入损耗，2光纤准直仪上的透镜具有非球面功能和比4光纤准直仪上的微光透镜更短的焦平面。在4光纤准直仪中使用的咧嘴透镜的类型与2光纤准直仪中使用的镜头不同。有效地，2光纤准直仪中的透镜操作以将相对于4光纤准直器中的微光透镜的光信号去焦点。

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