公开(公告)号：US20110206375A1

公开(公告)日：2011-08-25

申请号：US13091843

申请日：2011-04-21

Applicant: Qianjin Xiong ,  Liangchuan Li ,  Yuanda Huang

Inventor： Qianjin Xiong ,  Liangchuan Li ,  Yuanda Huang

IPC: H04J14/06

CPC classification number: H04B10/671 ,  H04B10/5165 ,  H04B10/676 ,  H04B2210/003 ,  H04J14/06

Abstract: The method includes: splitting an optical carrier into two or more sets of optical sub-carriers at a receiving end; respectively performing optical PDM on each set of the optical sub-carriers to obtain two sets of to-be-demodulated optical signals; and extracting a part of signals from each set of the to-be-demodulated signals to calculate features characterizing polarization states, controlling feedback signals according to the features, and correspondingly adjusting a polarization state of each set of the optical sub-carriers. With the device combining optical division into two or more sets of sub-carriers with optical PDM, an optical carrier signal can be split in an optical modulation format into four or more sets of signals for processing, and delay interference can be performed directly on an optical wave by using Differential Quadrature Phase Shifted Keying (DQPSK) demodulators to obtain by detection output signals.

Abstract translation: 该方法包括：在接收端将光载波分为两组或多组光子载波; 分别在每组光子载波上执行光PDM以获得两组要解调的光信号; 并从每组待解调信号中提取一部分信号，以计算表征极化状态的特征，根据特征控制反馈信号，并相应地调整每组光子载波的极化状态。 通过将光分组合成具有光PDM的两组或多组子载波的装置，光载波信号可以以光调制格式分成四组或更多组信号进行处理，并且延迟干扰可以直接在 通过使用差分正交相移键控（DQPSK）解调器通过检测输出信号获得光波。