摘要
根据单模光纤耦合器的耦合比对耦合区长度变化敏感的特点,提出了一种耦合型光纤振动传感器,并设计了相应的解调系统对传感器的响应进行光电转换和信号处理。为了验证耦合型光纤振动传感器的性能,把一个动圈式振动传感器同时放置在试验台上,用橡皮锤敲击试验台,两个传感器的测量结果相吻合。实验证明,耦合型光纤振动传感器能够满足振动测量的要求。
According to the characteristic that the coupler＇s coupling ratio is sensitive to the length change, a new kind of coupling fiber-optic vibration sensor is presented. And the demodulation system for photoelectric conversion and signal processing was designed. The coupling fiber-optic vibration sensor was placed on the vibration test-bed with a moving-coil sensor in order to testify its character. Hitting the test-bed with a rubber hammer, the behaviors of the coupling fiber-optic vibration sensor are closely agreed with the response of the moving-coil sensor, The experimental results show that the coupling fiber-optic vibration sensor could meets the requirement of vibration measurement.
出处
《半导体光电》
EI
CAS
CSCD
北大核心
2008年第3期430-433,共4页
Semiconductor Optoelectronics
关键词
光纤耦合器
熔锥光纤
振动传感器
耦合模理论
耦合比
fiber-optic coupler
fused fiber-optic
vibration sensor
coupled-mode theory
coupling ratio
作者简介
马宾（1973-），男，博士研究生，主要从事光纤振动传感技术及嵌入式系统研究。E-mail：jnxlmb@126．com
