@techreport{oai:soar-ir.repo.nii.ac.jp:00014502, author = {鳥羽, 栄治 and 石沢, 広明 and 相沢, 宏明 and 勝亦, 徹}, month = {Mar}, note = {In this research, We will report on a fiber optic chemical quantity sensor (Oxygen concentration, Carbon dioxide concentration, pH, Temperature) by using fluorescence. It is based on fluorescence quenching. The quenching ratio and lifetime of fluorescence are proportional to chemical quantity. We have fabricated a microscopic luminous probe by using various luminescence materials. We have clarified various characteristics of these probe and application to chemical examination. Moreover, the fiber optic thermometer probe using chromium doped YAlO_3 (Cr: YAlO_3) and long afterglow phosphor, are fabricated. The lifetime of Cr: YAlO_3 decrease with temperature from 0 to 500 ℃ lifetime and temperature coefficients of Cr: YAlO_3 crystals were about 10 times larger than that of the conventional sensor material such ruby crystals. In addition, long afterglow phosphor was found to have advantage of extremely high sensitivity around room temperature., Article, 先進ファイバー工学研究教育拠点研究成果報告書 11: 95-96(2005)}, title = {15-4-3 : ファイバオプティクスによる化学量センサとセンシングシステムの開発}, year = {2005} }