公开(公告)号：US20100284701A1

公开(公告)日：2010-11-11

申请号：US11938754

申请日：2007-11-12

Applicant: Christopher Lin ,  Mark Summa ,  Martin Williams ,  Douglas Butler ,  Peter Wigley

Inventor： Christopher Lin ,  Mark Summa ,  Martin Williams ,  Douglas Butler ,  Peter Wigley

IPC: H04B10/00

CPC classification number: H04B10/2513

Abstract: One embodiment sets forth a technique for measuring chromatic dispersion using reference signals within the operational range of amplifiers used to refresh data signals. One red/blue laser pair in the transmission node is used for measuring dispersion and chromatic dispersion compensation is added at each line node in the system. Since reference and data signals propagate through each amplifier, the reference signals used to measure chromatic dispersion receive the same dispersion compensation (and will have the same residual dispersion) as the data signals. Therefore, any residual dispersion in the data signals will manifest itself in downstream dispersion measurements and, thus, can be corrected. The tunable dispersion compensator in each line node may be set to compensate for the measured dispersion, thereby compensating for both the chromatic dispersion of the link connecting the current node to the prior node and any uncorrected residual dispersion from prior nodes.

Abstract translation: 一个实施例提出了使用用于刷新数据信号的放大器的操作范围内的参考信号来测量色散的技术。 传输节点中的一个红/蓝激光对用于测量色散，并且在系统中的每个线路节点处添加色散补偿。 由于参考和数据信号通过每个放大器传播，用于测量色散的参考信号将接收与数据信号相同的色散补偿（并将具有相同的残留色散）。 因此，数据信号中的任何残留色散将在下游色散测量中显现，因此可以被校正。 每个线路节点中的可调谐色散补偿器可以被设置为补偿测量的色散，由此补偿连接当前节点到先前节点的链路的色散和来自先前节点的任何未校正的残余色散。

公开(公告)号：US07692793B2

公开(公告)日：2010-04-06

申请号：US11998213

申请日：2007-11-29

Applicant: Christopher Lin ,  Deepak Devicharan

Inventor： Christopher Lin ,  Deepak Devicharan

IPC: G01N21/00 ,  G01J3/50

CPC classification number: G01J3/26 ,  G01J3/28 ,  G01J2003/2866 ,  G01M11/00 ,  G02F2203/055

Abstract: The specification describes an optical wavelength monitor/analyzer that uses a cost effective wavelength reference source. The wavelength reference source is a nominally fixed wavelength laser with inherent tunability over a very limited wavelength range, i.e. a few nanometers. Tuning is effected by changing the temperature of the laser. The limited range is useful for making multiple wavelength measurements in the context of analyzing wavelength drift in tunable optical filters.

Abstract translation: 该规范描述了使用成本有效的波长参考源的光学波长监视器/分析仪。 波长参考源是名义上固定的波长激光器，其在非常有限的波长范围内具有固有的可调谐性，即几纳米。 通过改变激光的温度来实现调谐。 有限的范围对于在可调谐光学滤波器中分析波长漂移的上下文中进行多个波长测量是有用的。

公开(公告)号：US06556766B2

公开(公告)日：2003-04-29

申请号：US09893195

申请日：2001-06-26

Applicant: Eric Chiu Tat Cheung ,  Christopher Lin ,  Yongsheng Liu ,  Xuefeng Yue

Inventor： Eric Chiu Tat Cheung ,  Christopher Lin ,  Yongsheng Liu ,  Xuefeng Yue

IPC: G02B600

CPC classification number: G02B6/29391 ,  G02B6/266 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/4215

Abstract: A dynamic gain equalizer (DGE) includes: a mirror; an electrode; and a lever with a first end and a second end opposite to the first end, where the lever is capable of rotating about a fulcrum, where the lever rotates the first end toward the electrode when the electrode is charged such that the second end blocks a portion of a channel from reaching the mirror, where an unblocked portion of the channel is reflected by the mirror. By manipulating the charge on the electrode, the rotation of the lever is controlled, determining how much of the light is blocked by the lever. Each lever in an array can attenuate a channel or a group of channels of a composite optical signal by a different amount. The DGE provides a significant range of blockage and can be closely spaced. It provides ease in integrating channel monitoring into the DGE.