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聚合物波导器件的稳定性是影响其实用化的一个关键问题。聚合物波导器件的热稳定性是由波导层(聚合物材料)的热稳定性决定的。采用侧链型和交联型聚氨酯材料分别制成波导电光调制器研究波导器件的热稳定性,热稳定性的判断依据是通过对聚合物调制器升温过程中测量器件的电光性能的变化。研究结果显示两种器件在常温时具有相同的电光性能,在器件升温过程中发现交联型聚氨酯调制器比侧链型聚氨酯调制器有优异的热稳定性。
The stability of polymer waveguide devices is a key issue affecting their practical application. The thermal stability of a polymeric waveguide device is governed by the thermal stability of the waveguide layer (polymeric material). Waveguide electro-optic modulators were used to study the thermal stability of waveguide devices by using side-chain and cross-linked polyurethane materials, respectively, and the thermal stability was judged by the change of electro-optic properties of the device during the temperature rise of the polymer modulator. The results show that the two devices have the same electro-optical properties at room temperature. It is found that the cross-linked polyurethane modulator has better thermal stability than the side-chain polyurethane modulator during the temperature rise of the device.