首页>
外国专利>
Chirped fiber grating sensor with variable reflection bandwidth according to strain and strain measurement system using the sensor
Chirped fiber grating sensor with variable reflection bandwidth according to strain and strain measurement system using the sensor
展开▼
机译：反射带宽可变的reflection光纤光栅传感器，根据应变和使用该传感器的应变测量系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
An optical fiber grating sensor in accordance with this invention an optical fiber comprising a core portion is formed relatively long period grating portion and the relatively relatively short period grating; And a blocking member that covers the outside of the optical fiber corresponding to the relatively long-period grating portion. Shut-off member is a reflection wavelength by the reflection wave and a relatively long-period grating portion by a relatively relatively short period grating part as to block the strain applied from the outside are overlapped with each other when subjected to strain and reduce the reflection band, of the light reflection as a whole the power is reduced. Thus, it reflected from the fiber grating sensor in accordance with an external strain because the power is able to detect the light is varied to easily detect the strain applied from the outside, is not necessarily a separate device such as a wave analysis device becomes simple structure . In addition, the power of light detected is a function of the optical fiber grating strain-sensor system independent of the temperature, so that excludes the effect of temperature.
展开▼
