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。

Thermal stability of polymer waveguide devices is a key issue for their commercialization. Thermal stability of device is decided by thermal stability of waveguide layer (polymer). The thermally stable modulators using side-chain polyurethane and cross-linked polyurethane with same electro-optic (EO) coefficient property at room temperature have been investigated. The thermal stability is studied by measuring the change of EO coefficient of polymer modulator during ascending the curing temperature rise. The experimental results show that the cross-linked polyurethane presents a remarkably controlled significant improvement of thermal stability.