公开(公告)号：US20120141138A1

公开(公告)日：2012-06-07

申请号：US12959874

申请日：2010-12-03

申请人： Qi YANG ,  Zhixue HE ,  Wu LIU ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

发明人： Qi YANG ,  Zhixue HE ,  Wu LIU ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

IPC分类号： H04B10/02 ,  H04B10/00

CPC分类号： H04L27/2096 ,  H04B10/548 ,  H04B10/611 ,  H04L1/0003 ,  H04L1/0057 ,  H04L27/223 ,  H04L27/2634 ,  H04L27/2697

摘要： The invention provides methods, devices and a system for recovering the corrupted subcarrier at the local oscillator (LO) frequency in coherent optical OFDM transmission. The method includes performing advanced coding on a data signal to obtain an encoded signal; performing high order modulation on the encoded signal to obtain a high-order-modulated signal; performing OFDM modulation on the high-order-modulated signal to obtain an electrical OFDM signal; and performing up-conversion on the electrical OFDM signal to obtain an optical OFDM signal to be output. The inventive technique of employing advanced coding with low rate combining with higher order modulation can be used to reduce the decoding bit error ratio (bit error rate) level, so that the LO subcarrier can be fully recovered while the bandwidth of the transmitted signal may be substantially the same as the existing optical OFDM system, and there is no need to add any feedback control module or feedback loop support or the like to the existing optical OFDM system, so that the complexity of the receiving side can be reduced.

摘要翻译： 本发明提供用于在相干光OFDM传输中恢复本地振荡器（LO）频率处的损坏子载波的方法，装置和系统。 该方法包括对数据信号执行高级编码以获得编码信号; 对编码信号执行高阶调制以获得高阶调制信号; 对高阶调制信号进行OFDM调制以获得电子OFDM信号; 并对电子OFDM信号执行上变频以获得要输出的光OFDM信号。 可以使用以较低速率组合高阶调制的高级编码的本发明技术来减少解码误码率（误码率）电平，使得LO子载波可以完全恢复，而发射信号的带宽可以是 与现有的光学OFDM系统基本相同，并且不需要向现有的光学OFDM系统添加任何反馈控制模块或反馈环路支持等，从而可以减少接收侧的复杂性。

公开(公告)号：US20120141135A1

公开(公告)日：2012-06-07

申请号：US12959689

申请日：2010-12-03

申请人： Qi YANG ,  Wu LIU ,  Zhixue HE ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

发明人： Qi YANG ,  Wu LIU ,  Zhixue HE ,  William SHIEH ,  Ivan B. DJORDJEVIC ,  Zhu YANG ,  Shaohua YU

IPC分类号： H04B10/00 ,  H04B10/06 ,  H04B10/04

CPC分类号： H04J14/0298 ,  H04B10/516 ,  H04J14/02 ,  H04J14/0279 ,  H04J14/06 ,  H04L1/0065

摘要： A transmitting device, a receiving device, an optical communication system, and associated methods are provided. The transmitting device transmits an optical signal containing data, and comprises: an optical tone generator for generating at least one optical tone; at least one encoder for performing advanced coding on at least one data signal respectively, each of the at least one data signal carrying a part of the data; at least one mapper for performing high order modulation on the at least one coded data signal; and an up-converter for up-converting the at least one high-order-modulated data signal into the optical signal to be outputted through the at least optical tone. Thereby, high speed (e.g., over 1-Tb/s) transmission per single channel over a long-haul distance (e.g. over 1000-km) with error-free recovery may be achieved.

摘要翻译： 提供了发送设备，接收设备，光通信系统和相关联的方法。 发送装置发送含有数据的光信号，并且包括：光学乐音发生器，用于产生至少一个光学色调; 至少一个编码器，用于分别对至少一个数据信号执行高级编码，所述至少一个数据信号中的每一个承载数据的一部分; 至少一个映射器，用于对所述至少一个编码数据信号执行高阶调制; 以及上变频器，用于将至少一个高阶调制数据信号上变频成通过至少光调而输出的光信号。 因此，可以实现具有无差错恢复的长距离（例如超过1000公里）的每个信道的高速（例如，超过1-Tb / s）的传输。

公开(公告)号：US20130050795A1

公开(公告)日：2013-02-28

申请号：US13340410

申请日：2011-12-29

申请人： Ying QIU ,  Zhixue HE ,  Ming LUO ,  Xiaoyin ZHANG ,  Qi YANG

发明人： Ying QIU ,  Zhixue HE ,  Ming LUO ,  Xiaoyin ZHANG ,  Qi YANG

IPC分类号： G02F1/365 ,  G02F1/35 ,  G02F1/01

CPC分类号： G02F1/3536 ,  G02F1/3532 ,  G02F2203/58

摘要： A system and method for generating an optical comb are provided. The system comprises at least one modulator for modulating a continuous wave sequentially by using at least one signal, respectively so as to generate a comb wave having a first plurality of subcarriers; and a nonlinear medium for causing the respective subcarriers of the comb wave to perform four-wave mixing to thereby generate a comb wave having a second plurality of subcarriers as the optical comb. With the present system and method, an ultra-wide spectrum optical comb with stable frequencies may be generated.

摘要翻译： 提供了一种用于产生光梳的系统和方法。 该系统包括至少一个调制器，用于分别通过使用至少一个信号来顺序地调制连续波，以产生具有第一多个子载波的梳状波; 以及用于使梳状波的各个子载波进行四波混频从而产生具有第二多个子载波的梳状波作为光梳的非线性介质。 利用本系统和方法，可以产生具有稳定频率的超宽谱光梳。