首页>
外国专利>
Temperature or strain distribution sensor comprising a coherent receiver to determine a temperature or a strain associated with a device under test
Temperature or strain distribution sensor comprising a coherent receiver to determine a temperature or a strain associated with a device under test
展开▼
机译:温度或应变分布传感器,包括相干接收器,用于确定与被测设备相关的温度或应变
展开▼
页面导航
摘要
著录项
相似文献
摘要
According to examples, a temperature or strain distribution sensor may include a photodiode to acquire a beat frequency between a first laser beam and a second laser beam. A modulator may modulate the first laser beam that is to be injected into a device under test (DUT). A coherent receiver may acquire a backscattered signal from the DUT, and use the second laser beam as a local oscillator to determine a Brillouin trace with respect to the DUT. The Brillouin trace may be used to determine a Brillouin frequency shift and a Brillouin power for the DUT to implement an absolute referencing of a Rayleigh reference trace. The coherent receiver may determine, relative to the Rayleigh reference trace, a further Brillouin frequency shift and a Rayleigh frequency shift to determine a temperature or a strain associated with the DUT.
展开▼