公开(公告)号：US20200249351A1

公开(公告)日：2020-08-06

申请号：US16104129

申请日：2018-08-16

申请人： Wei Chen ,  Shan Zhong ,  Jin Zhang ,  Zhonghua Zhu ,  Lei Wu

发明人： Wei Chen ,  Shan Zhong ,  Jin Zhang ,  Zhonghua Zhu ,  Lei Wu

IPC分类号： G01S17/36 ,  G01S7/4912 ,  G01S7/4911 ,  G01S17/58

摘要： The present disclosure relates to a FMCW Light Detection and Ranging system, a wave train of carrier frequency is modulated in narrow-band sequence, an delay interferometer with in-phase and quadrature outputs extracts the phase of this frequency modulation, and a coherent receiver with in-phase and quadrature outputs detects the phase of reflected light from a remote object, the ratio between two phases determines the distance of the remote object.

公开(公告)号：US20180192898A1

公开(公告)日：2018-07-12

申请号：US15403184

申请日：2017-01-11

申请人： Jin Zhang ,  Shan Zhong ,  Wei Chen ,  Zhonghua Zhu ,  Lei Wu

发明人： Jin Zhang ,  Shan Zhong ,  Wei Chen ,  Zhonghua Zhu ,  Lei Wu

IPC分类号： A61B5/024 ,  A61B5/00 ,  A61B5/021 ,  A61B7/04

CPC分类号： A61B7/04 ,  A61B5/0022 ,  A61B5/0064 ,  A61B5/02108 ,  A61B5/02133 ,  A61B5/02444 ,  A61B5/1102

摘要： The object of the present invention is to disclose a novel optical miniaturized handheld medical device for convenient monitoring and/or data collection of detailed signals on human cardiovascular function. The implementation consists of a number of advanced technologies, including interferometric detection, phase controlled focusing beam steering, auto-tracking scheme and algorism, and integrated optical chip assembly to enhance the device's performance and miniaturization. Briefly, this handheld medical device directs a single or dual output laser beam(s) onto certain skin surface to detect the surface vibration velocity at the point where the laser hits the surface. The skin surface vibrates in response to cardiovascular signals, such as blood pressure pulses, turbulent blood flow through narrowed arteries, pumping actions of the heart, or the closure of the heart valves etc. The miniaturized apparatus thus is capable of detecting these signals for the assessment of cardiovascular functions in both healthy and disease conditions.

公开(公告)号：US11150349B2

公开(公告)日：2021-10-19

申请号：US16104129

申请日：2018-08-16

申请人： Wei Chen ,  Shan Zhong ,  Jin Zhang ,  Zhonghua Zhu ,  Lei Wu

发明人： Wei Chen ,  Shan Zhong ,  Jin Zhang ,  Zhonghua Zhu ,  Lei Wu

IPC分类号： G01S17/00 ,  G01S17/36 ,  G01S17/58 ,  G01S7/4911 ,  G01S7/4912

摘要： The present disclosure relates to a FMCW Light Detection and Ranging system, a wave train of carrier frequency is modulated in narrow-band sequence, an delay interferometer with in-phase and quadrature outputs extracts the phase of this frequency modulation, and a coherent receiver with in-phase and quadrature outputs detects the phase of reflected light from a remote object, the ratio between two phases determines the distance of the remote object.

公开(公告)号：US08280257B2

公开(公告)日：2012-10-02

申请号：US11930831

申请日：2007-10-31

申请人： Xiaohui Yang ,  Zhonghua Zhu

发明人： Xiaohui Yang ,  Zhonghua Zhu

IPC分类号： G02B6/28 ,  H04J14/00

CPC分类号： H04J14/0221 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217

摘要： Systems and methods to reduce passband side-lobes associated with WSS-based ROADMs by applying a filter on each channel are provided. In an exemplary embodiment, a comb filter, such as a thin film filter or an interleaver, is utilized. Additionally, the present invention provides systems and methods to adaptively control amplifier target power and per wavelength target power to maintain signal launching power as per design in networks with WSS-based ROADMs. Accordingly, signal OSNR does not collapse faster than other similar configured system without WSS-based ROADM. In order to correct amplifier target power, the present invention utilizes system information about side-lobe size and OSNR at each amplifier.

摘要翻译： 提供了通过在每个通道上应用滤波器来减少与基于WSS的ROADM相关联的通带旁瓣的系统和方法。 在示例性实施例中，使用梳状滤波器，例如薄膜滤波器或交织器。 另外，本发明提供了适应性控制放大器目标功率和每波长目标功率的系统和方法，以便在基于WSS的ROADM的网络中按照设计维持信号发射功率。 因此，信号OSNR不会比没有基于WSS的ROADM的其他类似配置的系统崩溃得更快。 为了校正放大器目标功率，本发明利用关于每个放大器的旁瓣大小和OSNR的系统信息。

公开(公告)号：US20080232738A1

公开(公告)日：2008-09-25

申请号：US11930831

申请日：2007-10-31

申请人： Xiaohui Yang ,  Zhonghua Zhu

发明人： Xiaohui Yang ,  Zhonghua Zhu

IPC分类号： G02B6/28 ,  H04J14/00

CPC分类号： H04J14/0221 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0217

摘要： Systems and methods to reduce passband side-lobes associated with WSS-based ROADMs by applying a filter on each channel are provided. In an exemplary embodiment, a comb filter, such as a thin film filter or an interleaver, is utilized. Additionally, the present invention provides systems and methods to adaptively control amplifier target power and per wavelength target power to maintain signal launching power as per design in networks with WSS-based ROADMs. Accordingly, signal OSNR does not collapse faster than other similar configured system without WSS-based ROADM. In order to correct amplifier target power, the present invention utilizes system information about side-lobe size and OSNR at each amplifier.

摘要翻译： 提供了通过在每个通道上应用滤波器来减少与基于WSS的ROADM相关联的通带旁瓣的系统和方法。 在示例性实施例中，使用梳状滤波器，例如薄膜滤波器或交织器。 另外，本发明提供了适应性控制放大器目标功率和每波长目标功率的系统和方法，以便在基于WSS的ROADM的网络中按照设计维持信号发射功率。 因此，信号OSNR不会比没有基于WSS的ROADM的其他类似配置的系统崩溃得更快。 为了校正放大器目标功率，本发明利用关于每个放大器的旁瓣大小和OSNR的系统信息。

公开(公告)号：US08306425B2

公开(公告)日：2012-11-06

申请号：US12356593

申请日：2009-01-21

申请人： Xiaohui Yang ,  Zhonghua Zhu ,  Jun Bao

发明人： Xiaohui Yang ,  Zhonghua Zhu ,  Jun Bao

IPC分类号： H04J14/02 ,  H04J14/00

CPC分类号： H04Q11/0005 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0284 ,  H04Q2011/0035 ,  H04Q2011/0052

摘要： The present disclosure provides high-degree reconfigurable optical add-drop multiplexing (ROADM) systems using bi-directional wavelength selective switches (WSSs) and optical circulators. A single WSS is utilized on each degree of a node in a bi-directional manner, i.e. both ingress and egress share the same WSS. Advantageously, the present invention eliminates conventional splitters/combiners thereby capping intra-node insertion loss to a certain value regardless of the number of degrees. More importantly, the present invention reduces noise penalty associated with high-degree nodes while minimizing cost.

摘要翻译： 本公开提供使用双向波长选择开关（WSS）和光学循环器的高度可重构的光分插复用（ROADM）系统。 以双向方式在每个节点上使用单个WSS，即入口和出口共享相同的WSS。 有利地，本发明消除了常规的分离器/组合器，从而将节点内插入损耗限制到一定值，而不管度数。 更重要的是，本发明降低了与高度节点相关联的噪声，同时最小化了成本。