摘要
根据光纤布喇格光栅(FBG)耦合理论与单质点弹性绳振动原理研制出了一种FBG振动传感器。通过理论分析与试验验证得到FBG传感器的最佳配重尺寸(4.5mm×20mm)、最佳预拉伸量(0.8～1.2nm)与最佳的封装方式(石英玻璃管封装),得到传感器最佳的受温度影响最小的灵敏度参数。这种传感器响应速度快,灵敏度高。温度在-10～60℃的范围内,石英封装的FBG传感器灵敏度的误差小于0.1%。可以广泛地应用于军事基地、核场所、机场、仓库、监狱、建筑等场所的安防系统中。
A novel FBG vibration sensor is developed on the basis of FBG coupling theory and one-particle elastic string theory. The best bob-weight size （44.5 mm×20 mm）, the best pre- tension wavelength value（0.8-1.2nm） and the best encapsulation method （quartz glass tube method） of FBG vibration sensor were tested and verified by theoretical analysis and experiments. This kind of FBG vibration sensor is least sensitive to environment temperature with short response time and high sensitivity. The sensitivity error of the FBG sensor encapsulated by quartz glass tube is less than 0.1 % at the temperature of --1- 60 ℃ It can be used in a variety of fields such as military bases, nuclear sites, airports, warehouses, prisons and residence community and will be a new force of perimeter security technology.
出处
《半导体光电》
CAS
CSCD
北大核心
2012年第4期566-569,共4页
Semiconductor Optoelectronics
基金
国家自然科学基金项目(51175393)
国家教育部高校博士点专项基金项目(20100143110008)
关键词
光纤布喇格光栅
弹性绳振动
安防
fiber Bragg grating
elastic string vibration
perimeter security
