提出一种熊猫型的保偏光纤光栅耦合器,综合了光纤光栅优良的波长选择特性和光纤耦合器的多端口特点,最重要的是具有偏振保持能力,非常适用于全保偏光纤传感阵列系统的光分插复用。提出了熊猫保偏光纤光栅耦合器制作工艺流程,制作了三支熊猫保偏光纤光栅耦合器,测试发现在耦合区刻写光纤光栅对器件的偏振消光比没有产生明显的劣化影响。对器件进行了光分插复用实验,成功实现了1536.6 nm光的上行和下行,即光分插复用。 A Panda polarization maintaining fiber grating coupler is proposed which combines the excellent wavelength selectivity characteristics of fiber gratings with the multiport characteristics of fiber couplers. The most important thing is polarization maintaining capability, which is very suitable for full polarization maintaining fiber sensing array The system of optical add-drop multiplexing. Panda polarization maintaining optical fiber grating coupler manufacturing process is proposed, and three Panda polarization maintaining fiber grating couplers are fabricated. It is found that there is no obvious detrimental effect on the polarization extinction ratio of the device in the coupling region. The device was added to the optical add-drop multiplexing experiments, the successful realization of the 1536.6 nm optical uplink and downlink, that is, optical add-drop multiplexing.