公开(公告)号：US07366425B2

公开(公告)日：2008-04-29

申请号：US10386359

申请日：2003-03-11

申请人： Pavel V. Mamyshev ,  Christian J. Rasmussen ,  Benny P. Mikkelsen ,  Fenghai Liu

发明人： Pavel V. Mamyshev ,  Christian J. Rasmussen ,  Benny P. Mikkelsen ,  Fenghai Liu

IPC分类号： H04B10/04

CPC分类号： H04B10/50575 ,  H04B10/505 ,  H04B10/5162 ,  H04B10/5165 ,  H04B10/5167

摘要： Different techniques for generating spectrally efficient carrier-suppressed modulated optical signals, also known as “phase-shaped binary transmission” (PSBT) signals, employ electrical components that generate only 2-level or binary signals, in contrast to techniques that require 3-level electrical drivers. The PSBT modulators can be used with return-to-zero (RZ) modulators for generating RZ-PSBT signals, which have the characteristic of even greater spectral efficiency than NRZ PSBT signals. The technique is generalized to RZ signals with an arbitrary phase difference between pulses. These signals can be generated by shifting the central (carrier) frequency of an RZ modulated optical signal, which can be done using a certain phase modulation or using spectral filtering with a passband offset from the center (carrier) frequency of the modulated optical signal, and the signals can also be generated by phase modulation at a frequency lower than the signaling rate of the modulated signal.

摘要翻译： 用于产生频谱效率高的载波抑制调制光信号的不同技术也称为“相位二进制传输”（PSBT）信号，采用仅产生2电平或二进制信号的电气部件，与需要3级 电动司机。 PSBT调制器可以与返回零（RZ）调制器一起使用，用于产生RZ-PSBT信号，其具有比NRZ PSBT信号更高的频谱效率的特性。 该技术被推广到具有脉冲之间的任意相位差的RZ信号。 这些信号可以通过移位RZ调制光信号的中心（载波）频率来产生，这可以使用一定的相位调制或使用具有从调制的光信号的中心（载波）频率的通带偏移的频谱滤波， 并且信号也可以通过低于调制信号的信号速率的频率的相位调制来产生。