首页>
外国专利>
Method and apparatus for obtaining phase in sensitive and/or polarization- insensitive optical heterodyne receiver for a fsk-modulated transmission signal
Method and apparatus for obtaining phase in sensitive and/or polarization- insensitive optical heterodyne receiver for a fsk-modulated transmission signal
展开▼
机译:用于为fsk调制的传输信号在灵敏和/或偏振不敏感的光外差接收机中获取相位的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
Apparatus and method for obtaining a phase insensitive and/or polarization insensitive optical heterodyne reception for a FSK modulated transmission signal which uses a low intermediate frequency relative to the data rate of the transmission signals and at every clock of the transmission signal, the phase is keyed between 0 and 90° at the starting time and in the middle of the clock time the polarization of the signal is keyed between two mutually orthogonal polarization conditions at the start of the second and the start of the fourth quarter of the clock time and the phase independent and/or polarization independent output signal of the receiver is obtained from the signal which is shift keyed in a simple optical heterodyne receiver for FSK modulated transmission signals.
展开▼