研制了一种新型全聚合物49信道绝热低偏振相关阵列波导光栅（AWG）芯片。利用直接紫外光写入技术，实现了波导芯片的设计与制备。利用Matlab 软件对AWG 的传输特性进行了优化模拟，通过对聚合物衬底的热膨胀系数和聚合物波导的热光系数进行调控，得到了器件良好的绝热低偏振相关特性。测得AWG 的中心波长为1550.918 nm，波长间隔为0.8 nm，插入损耗的信道变化范围是5.51 dB~10.62 dB，串扰大于20 dB，偏振漂移和温度变化分别是0.08 nm 和0.03 nm/K。这种新技术十分适用于高性能多功能集成光路中，具有广阔的应用前景。

An athermal low polarization-independent 49-channel arrayed-waveguide grating (AWG) multiplexer relying on a ultraviolet (UV) curable all-polymer approach is designed and fabricated by simple direct ultraviolet photolithography process. The transmission properties of the AWG around the central wavelength of 1550.918 nm with the wavelength spacing of 0.8 nm are optimized by Matlab programming. By properly adjusting the positive coefficient of thermal expansion of the polymer substrate and the negative thermo-optic coefficient of the polymer waveguide, athermal and low polarization-independent characteristics of AWG device are realized. The actual fiberfiber insertion loss at each channel is from 5.51 dB to 10.62 dB, and the crosstalk of the 49 channels is larger than 20 dB. Both polarization drifts and temperature shifts of the AWG are 0.08 nm and 0.03 nm/K, respectively. The new technique can be well suited for realizing optical integrated circuits with excellent performances.