Invention Grant
US07994469B2 Interrogator for a plurality of sensor fiber optic gratings having at least one filter for converting changes in peak reflection wavelength to changes in intensity 有权
用于多个传感器光纤光栅的读写器,其具有至少一个滤波器,用于将峰值反射波长的变化转换为强度变化

Interrogator for a plurality of sensor fiber optic gratings having at least one filter for converting changes in peak reflection wavelength to changes in intensity
Abstract:
An interrogator for a plurality of sensor fiber optic gratings. The interrogator includes a broadband optical source; at least one beam splitter directing output of the optical source to the sensor fiber optic gratings; at least one linear filter for converting changes in peak reflection wavelength to changes in intensity; at least one optical receiver; at least one amplifier associated with each optical receiver; and an active closed-loop circuit following the at least one amplifier to provide bias voltage stabilization.
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