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Application of an optical fiber grating pressure sensor on a high‐speed‐train real‐time tracing system

A new kind of optical fiber Bragg grating (FBG) pressure sensor is introduced by using the wavelength encoding characteristic of FBG. This sensor combines a computer monitor with a series of FBGs of different wavelengths. The measurement time is 1 ms/point. It can be widely used on a real‐time tracing system for high‐speed trains, to obtain the train's parameters, such as position, velocity, acceleration, “out of joint,” etc. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 148–151, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10851