利用宽带保偏光纤光栅(PFBG)、普通有源光纤和窄带普通光纤光栅构成独立的谐振腔,且窄带普通光纤光栅的中心波长分别与保偏光纤光栅的一个反射峰波长对准,可以输出稳定的双波长/单波长的单偏振激光。利用这一思想,制成了基于非保偏有源掺杂光纤的单偏振双波长光纤激光器。实验结果表明,双波长同时激射时的激光消光比为 46.7 dB,单波长激光的消光比为59.6 dB,滤波出单波长测量其偏振度为98.5%。这种激光器在微波光子领域可用于在光域产生微波。

Two independent resonators have been set up by using wide band polarization maintaining fiber Bragg grating(PFBG), common active fiber and narrowband common fiber Bragg gratings(FBG), and the central wavelength of the narrowband common FBG aims at one of the reflective peaks of PFBG, which can output stable dual/single wavelength single polarized laser.The Dual-wavelength of single polarized fiber laser based on common active fiber is fabricated and the fiber laser can output dual/single wavelength at normal temperature. The optical noise-to signal ratio(ONSR) of dual-wavelength laser is 46.7dB, and 59.6dB for one wavelength laser. The degree of polarization(DOP) of fiber laser is 98.5% by HP 8509B. This technique can be used in generation of microwave/millimeter-wave for radio-over-fiber(ROF).