文献类型：会议论文

英文题名：Cross-kinked polyurethane with high thermal stability and low optical loss

作者：Li, Xuhua[1]; Yuan, Qiaolong[1]; Wang, Dening[1]; Cao, Zhuangqi[2]; Shen, Qishun[2]

机构：[1]E China Univ Sci & Technol, Inst Mat Sci & Engn, Shanghai 200237, Peoples R China

会议论文集：Conference on Asia-Pacific Optical and Wireless Communication (APOC 2002)

会议日期：OCT 15-18, 2002

会议地点：SHANGHAI, PEOPLES R CHINA

语种：英文

外文关键词：polyurethane; electro-optical coefficient; propagation loss; thermal stability

摘要：A novel cross-linked second-order nonlinear optical polyurethane was synthesized from disperse red 19 (DR-19), triethanolamine and the trimer (TTDI) of toluene diisocyanate. The thermal stability of the polyurethane was significantly improved because the trimer had high thermal stability and increased the cross-link degree and the rigidity of the polyurethane. The polyurethane obtained high poling efficiency through a novel "host-guest" approach, and the electro-optical coefficient gamma(33) reached 37 pm/V at 832 nm. The propagation loss of the polyurethane was lowered because the number density of C-H bonds in the polyurethane was low and the films had good optical quality.