本文作者首次提出了一种可用于光纤传感器技术的、性能优越的新型金属包层光波导。试验和理论分析计算表明：当此圆柱形金属包层光波导的直径为２００μｍ时，其损耗为０．０６ｄＢ／ｍｍ，损耗随金属包层长度的增加而线性增加．在制做光纤传感器时，使被测参数的变化导致金属包层长度的变化；通过测量金属包层光波导的损耗就可以测出金属包层长度的变化，进而测出被测参数。由于光功率及损耗的测量原理简单、精度高、造价低，为光纤传感器提供了一种成熟、经济的测量探头，通过大量的试验和传感器试制证明具有此种探头的光纤传感器性能优越、制作方便，是一种难得的光电探头。 For the first time, the authors propose a new type of metal-clad optical waveguide with superior performance which can be used in optical fiber sensor technology. Experimental and theoretical analysis shows that when the diameter of the cylindrical clad clad waveguide is 200μm, the loss is 0.06dB / mm, and the loss increases linearly with the increase of the clad length. When the optical fiber sensor is made, the change of the measured parameter leads to the change of the length of the metal cladding. The change of the length of the metal cladding can be measured by measuring the loss of the optical waveguide of the metal cladding, and then the measured parameter is measured. The optical power and loss measurement principle is simple, high precision and low cost, providing a mature and economical measuring probe for optical fiber sensor. Through a large number of experiments and sensor trial production, the optical fiber sensor with such a probe has the advantages of superior performance and convenient manufacture , Is a rare photoelectric probe.