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Tunable Laser Wavelength Calibration for Fiber Sensing

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Dr. Christopher J. Myatt and Nicholas G. Traggis, Precision Photonics Corp.

Monitoring the wavelength reflected from a fiber Bragg grating can be achieved using tunable laser technology combined with absolute wavelength referencing. Laser sources are preferred for applications such as overseeing the operating conditions of oil wells, because their spectral power density yields high signal-to-noise levels. This method works by sweeping a narrowband tunable laser source over the spectral range, including the fiber Bragg grating’s spectral peak. The laser wavelength measurement module records the wavelength of the scanning laser, while the power meter records a peak...Read full article

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