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金被覆光纤(普通石英光纤外加薄薄一层金护套)日趋普及,原因在于这类特种光纤在传感领域和光谱领域得到了更加广泛的应用,尤其适用于光纤末端需防热的那些应用场合。由于金被覆的光纤和光纤束能够承受750℃高温而信号无衰减,所以它们可以承担普通技术无法完成的测量工作。洛氏国际公司的Rocketdyne分部(位于加利福尼亚卡诺加帕克)对金被覆光纤作了测定:这类光纤可用于液体燃料火箭发动机和高超音速冲压式喷气发动机,还可在涡轮叶片温度测量,燃烧过程
The growing popularity of gold-coated optical fibers (ordinary quartz optical fiber plus a thin layer of gold jacket) is due to the wider use of these specialty fibers in the sensing and spectroscopy fields, especially for those applications where fiber ends need to be protected from heat occasion. Because the gold-coated fiber and fiber bundle can withstand 750 ℃ high temperature signal attenuation without, so they can take the ordinary technical measurement can not be completed. Rockchip International’s Rocketdyne division in Canoga Park, California, measured gold-coated optical fibers for use in liquid-fuel rocket motors and hypersonic ramjet engines as well as in turbine blade temperature measurement, combustion process