公开(公告)号：US11258528B2

公开(公告)日：2022-02-22

申请号：US16578396

申请日：2019-09-22

申请人： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

发明人： Jeffrey T. Rahn ,  Kuang-Tsan Wu ,  Steven J. Hand ,  David F. Welch

IPC分类号： H04B10/00 ,  H04J14/02 ,  H04L5/00 ,  H04J14/00

摘要： A network or system in which a hub or primary node may communicate with a plurality of leaf or secondary nodes. The hub node may operate or have a capacity greater than that of the leaf nodes. Accordingly, relatively inexpensive leaf nodes may be deployed to receive data carrying optical signals from, and supply data carrying optical signals to, the hub node. One or more connections may couple each leaf node to the hub node, whereby each connection may include one or more spans or segments of optical fibers, optical amplifiers, optical splitters/combiners, and optical add/drop multiplexer, for example. Optical subcarriers may be transmitted over such connections, each carrying a data stream. The subcarriers may be generated by a combination of a laser and a modulator, such that multiple lasers and modulators are not required, and costs may be reduced. As the bandwidth or capacity requirements of the leaf nodes change, the number of subcarriers, and thus the amount of data provided to each node, may be changed accordingly. Each subcarrier within a dedicated group of subcarriers may carry OAM or control channel information to a corresponding leaf node, and such information may be used by the leaf node to configure the leaf node to have a desired bandwidth or capacity.

公开(公告)号：US08811827B2

公开(公告)日：2014-08-19

申请号：US12567407

申请日：2009-09-25

申请人： Jeffrey T. Rahn ,  Ilya Lyubomirsky ,  Alan C. Nilsson ,  Vincent G. Dominic ,  Parmijit Samra

发明人： Jeffrey T. Rahn ,  Ilya Lyubomirsky ,  Alan C. Nilsson ,  Vincent G. Dominic ,  Parmijit Samra

IPC分类号： H04B10/556

CPC分类号： H04B10/5162

摘要： Consistent with the present disclosure, polarized optical signals having the same wavelength are modulated in response to ERZ drive signals, to thereby yield corresponding RZ optical signals. Each of the polarized RZ optical signals includes a plurality of RZ transitions wherein the power of the optical signal returns to zero or a minimal power between bits or symbols. The phase or timing of the ERZ drive signals, however, is controlled, so that the RZ transitions in one polarized optical signal remain interleaved with the RZ transitions of the other polarized optical signal. Alternatively, the RZ transitions of the two polarized optical signals may be controlled so that the two are temporally aligned with one another. Thus, the timing of the RZ transitions of one polarized optical signal relative to the other polarized optical signal may be adjusted to optimize system performance.

摘要翻译： 根据本公开，响应于ERZ驱动信号调制具有相同波长的偏振光信号，从而产生相应的RZ光信号。 每个极化RZ光信号包括多个RZ转变，其中光信号的功率返回零或位或符号之间的最小功率。 然而，ERZ驱动信号的相位或定时被控制，使得一个偏振光信号中的RZ转变保持与另一个偏振光信号的RZ跃迁交错。 或者，可以控制两个偏振光信号的RZ转变，使得两者在时间上彼此对准。 因此，可以调整一个偏振光信号相对于另一个偏振光信号的RZ转变的定时，以优化系统性能。

公开(公告)号：US20100322631A1

公开(公告)日：2010-12-23

申请号：US12816599

申请日：2010-06-16

申请人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Jeffrey T. Rahn

发明人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Jeffrey T. Rahn

IPC分类号： H04J14/06

CPC分类号： G02B6/12004 ,  G02B6/12009 ,  G02B6/264 ,  G02B2006/12126 ,  H04J14/02 ,  H04J14/06

摘要： A coherent optical receiver circuit is disclosed in which various components of the optical receiver may be provided or integrated, in one example, on a common substrate. Further integration is achieved by incorporating various optical demultiplexer designs that are relatively compact and conserve space on the surface of the substrate. The optical receiver circuit may be used to demultiplex quadrature phase shift keying (QPSK) optical signals.

摘要翻译： 公开了一种相干光接收器电路，其中在一个示例中，可以在公共基板上提供或集成光接收器的各种部件。 通过结合相对紧凑的各种光解复用器设计并节省衬底表面上的空间来实现进一步的集成。 光接收机电路可用于解复用正交相移键控（QPSK）光信号。