pH值是生物工程中一个十分重要的监控参数,目前检测pH值的手段是pH试纸和可消毒pH玻璃电极。前者只能定性检测,既粗糙又不可靠,后者则完全依赖进口,其寿命不长,消耗极快,且价格昂贵,耗费国家大量外汇。为此,除研制国产可消毒pH玻璃电极外,探索和研究新的pH值检测手段是一项急待解决的研究课题。光纤化学传感器是80年代初才问世的新颖敏感器件,文献中报导的第一个光纤化学传感器是Peterson等人研制的光纤pH传感器,用于人体内生pH值的测定。随后关于光纤pH传感器的报导大量涌 pH is one of the most important monitoring parameters in bioengineering. At present, the means of detecting pH is pH paper and sterilizable pH glass electrode. The former can only qualitative test, both rough and unreliable, while the latter is completely dependent on imports, its life is not long, fast consumption, and expensive, consuming a large amount of foreign exchange. To this end, in addition to the development of domestic sterilizable pH glass electrode, the exploration and research of new pH value detection means is an urgent research topic. Optical fiber chemical sensor is a novel and sensitive device that came out in the early 1980s. The first optical fiber chemical sensor reported in the literature is an optical fiber pH sensor developed by Peterson et al., Which is used for the determination of endogenous pH in human body. Subsequent reports of fiber optic pH sensors were flooding out