Method for transmitting time-frequency signal in optical fiber through polarized light

The invention discloses a method for transmitting a time-frequency signal in an optical fiber through polarized light. A single-fiber bidirectional optical fiber time transmission scheme acts as the basis; and two linearly polarized light of the same wavelength is applied to transmit the time signal on the back-and-forth optical fiber link so that the influence of the delay asymmetry caused by theoptical fiber dispersion introduced in the back-and-forth optical fiber link in case of using two light of different wavelengths to transmit the time signal can be overcome, the accuracy of optical fiber time signal transmission can be enhanced, and the time synchronization accuracy between the master and slave stations is enabled to be the subnanosecond level and even higher. 本发明公开了种采用偏振光在光纤中传递时间频率信号的方法，以单纤双向光纤时间传递方案为基础；在来回光纤链路上采用相同波长的两个线偏振光传递时间信号，克服了采用两个不同波长的光传递时间信号时在来回光纤链路上引入的光纤色散导致的时延不对称性的影响，从而提高了光纤传递时间信号的精度，使主从两个站点之间的时间同步精度可以达到亚纳秒级甚至更高。