Quadrature phase shift carrier modulation is used to represent the four different phase inputs of digital information, is quaternary phase shift keying.
四相相移调制是利用载波的四种不同相位差来表征输入的数字信息，是四进制移相键控。
Besides, the limitation of RZ-DPSK regeneration utilizing self-phase modulation is discussed. The initial conditions using four-wave mixing to achieve regeneration is given.
同时对于RZ - DPSK信号，研究了利用自相位调制实现再生的局限性，给出了利用四波混频实现再生的初始条件。
Comparison of crosstalk induced by four-wave mixing and cross-phase modulation in Si-EDFAs and Te-EDFAs is carried out using semiclassical theory.
文中用半经典理论分析比较了这两种光纤中由于四波混频和互相位调制引起的串扰。
应用推荐