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最近,瑞典的阿塞亚公司研制成功光导纤维式温度计。该温度计的探测头与普通的温度计不同,是把微半导体晶体粘接在直径为0.1毫米的石英纤维顶端而构成的。其最大优点,就是在恶劣环境中亦能使用。目前,该公司正进一步探讨除了测温以外的其他用途。这次研制成功的光纤探测头在爆炸性气体、高电压、化学液体、超短波等所有场合,均能毫无损失的进行测试。该温度计的工作原理,就是把温度计内发光二极管发出的光通过光导纤维传给半导体传感器,传感器吸收该光后,再把根据传感器所处位置的温度相应地改变了波长的光,通过同一光导纤维加以反射。温度计内的固态电路能把发光二极管所发出的光和反射光的波长范围函数,通过微处理机迅速的加以计算并显示出来。另外,砷化镓探针传感器能在0～200℃的范围内进行测定,精度为1℃。该温度计的光导纤维长度是3米,然而,若使用接线装置加以连接,则可延长至500米左右。
Recently, Acelia, Sweden, developed a fiber optic thermometer. The thermometer probe and ordinary thermometer is different, is the micro-semiconductor crystal is bonded to the diameter of 0.1 mm quartz fiber top of the composition. Its biggest advantage is that it can be used in harsh environments. Currently, the company is exploring further uses other than temperature measurement. The successful development of the optical fiber probe in explosive gas, high voltage, chemical liquids, ultra-shortwave and all other occasions, can be tested without loss. The working principle of the thermometer is that the light emitted by the light-emitting diode in the thermometer is transmitted to the semiconductor sensor through the optical fiber. After the sensor absorbs the light, the light with the wavelength changed correspondingly according to the temperature of the sensor is transmitted through the same optical fiber Reflect. Solid-state thermometer circuit can light-emitting diode light emitted and reflected light wavelength range function, through the microprocessor quickly calculated and displayed. In addition, gallium arsenide probe sensor can be measured in the range of 0 ~ 200 ℃, accuracy of 1 ℃. The thermometer has an optical fiber length of 3 meters, however, it can be extended up to about 500 meters if it is connected using a wiring device.