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    • 73. 发明授权
      US07574146B2 Pattern-dependent error counts for use in correcting operational parameters in an optical receiver 有权
    • Pattern-dependent error counts for use in correcting operational parameters in an optical receiver
    • 用于校正光接收机中的操作参数的模式相关误差计数
    • US07574146B2
    • 2009-08-11
    • US10888329
    • 2004-07-09
    • Ting-Kuang Chiang , Vincent G. Dominic , Robert B. Taylor
    • Ting-Kuang Chiang , Vincent G. Dominic , Robert B. Taylor
    • H04B10/06 , H03K5/159
    • H04B10/6971 , H04L1/20
    • An optical transmission network includes an optical transmitter photonic integrated circuit (TxPIC) chip, utilized in an optical transmitter and has a plurality of monolithic modulated sources integrated for multiple signal channels on the same semiconductor chip is provided with channel equalization at the optical receiver side of the network that permits one or more such integrated modulated sources in the TxPIC chip to be out of specification thereby increasing the chip yield and reducing manufacturing costs in the deployment of such TxPIC chips. FEC error counts at the FEC decoder on the optical receiver side of the network includes counters that accumulate a plurality of bit pattern-dependent error counts based on different N-bit patterns in the received data bit stream. The accumulated counts of different N-bit patterns are utilized to provide for corrections to threshold and phase relative to the bit eye pattern as well as provided for weight coefficients for the optical receiver equalization system. The deployment of this type of equalization in a digital OEO REGEN network substantially reduces, if not eliminates, the need for dispersion compensating fiber (DCF) or EDFAs in an optical link of the network and enhances the optical receiver tolerance to chromatic dispersion (CD) so that an increase in chip yield is realized for TxPIC chips not operating with acceptable operational parameters, particularly with a desired frequency chirp parameter relative to at least one of the TxPIC modulated sources.
    • 光传输网络包括在光发射机中使用的光发射机光子集成电路（TxPIC）芯片，并且具有在同一半导体芯片上为多信号通道集成的多个单片调制源，在光接收机侧提供信道均衡 允许TxPIC芯片中的一个或多个这样的集成调制源的网络超出规范，从而增加了芯片产量并降低了这种TxPIC芯片的部署中的制造成本。 在网络的光接收机侧的FEC解码器处的FEC错误计数包括基于接收的数据比特流中不同的N位模式累积多个与位模式有关的错误计数的计数器。 利用不同N位模式的累积计数来提供相对于位眼图的阈值和相位的校正，以及为光接收机均衡系统提供的权重系数。 在数字OEO REGEN网络中部署这种类型的均衡基本上降低了（如果不消除）在网络的光链路中对色散补偿光纤（DCF）或EDFA的需求，并增强了光接收机对色散（CD）的容限， 使得对于不以可接受的操作参数操作的TxPIC芯片，特别是相对于至少一个TxPIC调制源的期望频率啁啾参数，实现了芯片产量的增加。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 78. 发明申请
      US20050286521A1 Universal digital framer architecture for transport of client signals of any client payload and format type 有权
    • Universal digital framer architecture for transport of client signals of any client payload and format type
    • US20050286521A1
    • 2005-12-29
    • US11154455
    • 2005-06-16
    • Ting-Kuang Chiang , Drew Perkins , Edward Sprague , Daniel Murphy
    • Ting-Kuang Chiang , Drew Perkins , Edward Sprague , Daniel Murphy
    • H04J3/08 , H04J3/14 , H04J3/16 , H04L12/28 , H04L12/56
    • H04J3/1652 , H04J3/08 , H04J3/14
    • Client signals to be transported in a transmission network, particularly an optical transmission network, may have different payload envelope rates and are digitally mapped on the client egress side into first transport frames (also referred to as iDTF frames, or intra-node or internal digital transport frames), at the client side for intra-transport within terminal network elements (NEs) and further digitally mapped into second transport frames (also referred to as DTFs or digital transport frames) for inter-transport across the network or a link which, through byte stuffing carried out in the first transport frames so that they always have the same frame size. As a result, the system of framers provides for a DTF format to always have a uniformly universal frame rate throughout the network supporting any client signal frequency, whether a standard client payload or a proprietary client payload, as long as its rate is below payload envelope rate of the client signal. At the client signal ingress side, the signal are digitally demapped from the second transport frames (DTF format) into the first transport frames where the stuff bytes are removed and accordingly processed at an intermediate node element before further transport, or digitally demapped from the first transport frames (iDTF format) to reproduce or reassemble the client signal or signals comprising the client payload at the client payload envelope rate for reception at the client's equipment. Among various features disclosed, two predominate features are (1) a single channel or network rate for transport of all signals between network elements (NEs) and end terminal network elements and (2) the digitally wrapping of different types of payloads into N client side or first frames using stuff bytes to render each client side frame size equal to a predetermined value. Then the stuffed first frames are wrapped into line side or second frames for transport over the network at the same high speed line rate for all digitally wrapped client signals. The client side framers may be, for example, running at the lowest signal rate encountered, to digitally wrap then into parallel N client signals or digitally wrap a client signal multi-sected into N parts, where these two different client signals have different payload rates.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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