Optical cross section (OCS) is a value which describes the maximum amount of reflected back to the source. The standard unit of measurement is m /sr. OCS is dependent on the geometry and the reflectivity at a particular of an object. Optical cross section is useful in fields such as. In the field of this is referred to as. Objects such as on automobiles have a high optical cross section to maximize the laser return to the.
Fiber Bragg gratings (FBGs) are widely used as sensors for temperature, strain, and vibration measurement. Their most important advantage is signal modulation consisting in shifting the spectrum in the wavelength domain. Determining the wavelength shift is the most important issue in precise measurements of. This paper introduces the design principle of high-speed optical fiber grating demodulator based on scanning laser source, elaborated on high-speed fiber Bragg grating demodulation system principle. By changing the step size of each calculation.
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