Fabrication of electro-magnetic sensor using electro-optic polymers

使用电光聚合物制造电磁传感器

基本信息

批准号：
11355011
负责人：
KAINO Toshikuni
金额：
$ 23.76万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2002
项目状态：
已结题

项目摘要

Electro-magnetic sensors are of special concern because so many electrical equipments induce electro-magnetic radiation and the radiation affects the health of human being. To date electro-magnetic sensors are fabricated using crystal materials such as KIP. Electro-optic (EO) polymers are promising materiall for electro-magnetic sensing applications because of their large EO coefficients and processability to make a sensing device. In this research we had focused on the fabrication of new EO polymers with high EO efficiencies as well as high thermal stability. Because electro-magnetic sensors should preferably be serially-grafted waveguide structure with transparent polymer waveguide, we have fabricated the waveguide using UV-curable epoxy resin as a passive polymer waveguide.Among a variety of nonlinear optical polymers we investigated the use of a dye containing an acceptor composed with tricyano furan group that was coupled with azobenzene structure was very effective to enhance optical nonlinearity. To obtain thermally stable EO polymers, we had used poly arylether as a matrix of the dye. We had also used polyimide base EO-polymers as a thermally stable optical waveguides.Synthesized EO-polymer with tricyano-containing furan acceptor had excellent optical nonlinearity, about 3 times larger than that of standard Disperse-Red 1 attached polymer. A serially-grafted waveguide of the EO-polymer and passive polymer was fabricated to apply them to electro-magnetic sensor in a near-IR wavelength region.In conclusion, new type of EO-polymers were successfully synthesized and about 3 times larger optical nonlinearity than that of standard EO-polymer was attained. The serially-grafted waveguide of the EO-polymer with antenna structure is expected to be applied for evaluating electro-magnetic field in telecommunication wavelength region.

电磁传感器受到特别关注，因为许多电气设备都会产生电磁辐射，而电磁辐射会影响人类的健康。迄今为止，电磁传感器是使用 KIP 等晶体材料制造的。电光 (EO) 聚合物由于其大的 EO 系数和制造传感设备的可加工性，在电磁传感应用中是一种很有前景的材料。在这项研究中，我们专注于制造具有高 EO 效率和高热稳定性的新型 EO 聚合物。由于电磁传感器最好采用透明聚合物波导的串联接枝波导结构，因此我们使用紫外固化环氧树脂作为无源聚合物波导来制作波导。在各种非线性光学聚合物中，我们研究了使用含有由三氰基呋喃基团与偶氮苯结构耦合组成的受体对于增强光学非线性非常有效。为了获得热稳定的环氧乙烷聚合物，我们使用聚芳醚作为染料的基质。我们还使用聚酰亚胺基EO聚合物作为热稳定光波导。具有含三氰基呋喃受体的合成EO聚合物具有优异的光学非线性，大约比标准Disperse-Red 1连接聚合物大3倍。制备了EO聚合物和无源聚合物的串联接枝波导，将其应用于近红外波长区域的电磁传感器。综上所述，成功合成了新型EO聚合物，光学非线性提高了约3倍达到了比标准 EO 聚合物更高的性能。具有天线结构的EO聚合物的串联接枝波导有望用于评估电信波长区域的电磁场。