不同热交联气氛对含氟聚芳醚近红外光学吸收的影响

光波导材料对于光通信及光互联产业的发展起着至关重要的作用，例如可用来制作波分复用系统中的光衰减器，热光开关，阵列波导光栅复用／解复用器，光滤波器等．聚合物材料由于其容易加工，与无机材料相比有相对较低的制作成本，而从众多光波导材料中脱颖而出．目前光通讯材料与器件的研究应用主要集中在1．3和1．55μm两个波长上，然而随着波分复用(WDM)技术的发展，

Effect of Heat-treatment Atmosphere on the Near-infrared Absorption of the Fluorinated Poly(aryl ether)

C-1s and O-1s of the 3,5-bitrifluoromethylated poly(aryl ether) terminated with phenylethynyl moieties(2CF₃-PAE-PEP) before/after crosslinking were tested by the X-ray photoeletron spectroscopy(XPS). The measurements show that some of the C_O bonds in the molecule structure will be broken if the films are crosslinked in the air, which is able to form some new CO bonds with the oxygen in the air. However, the ratios of the groups in the films cured in nitrogen remain the same as that of the uncured samples. It is the the forth harmonic of the stretching vibration of CO bond(4ν^<sup>φ_<sub>C=O) that causes the absorption loss at the wavelength 1 382 nm.