Fiber laser source/analyzer for Bragg grating sensor array interrogation
- United Technologies Research Cent, East Hartford, CT (United States)
This paper reports on the application of a calibrated, narrow-linewidth, single-frequency, continuously wavelength-tunable erbium fiber laser to the interrogation of a multipoint Bragg grating temperature sensor. The fiber laser was wavelength-tuned, through an array of three fiber Bragg grating sensors, to determine the temperature of each individual grating. The temperatures of the three gratings were measured as a function of grating Bragg wavelength. The minimum wavelength resolution, due to electro-mechanical repeatability, of the fiber laser source/analyzer was determined to be approximately 2.3 picometers. This corresponds to a frequency resolution of approximately 300 MHz. 10 refs.
- OSTI ID:
- 53449
- Journal Information:
- Journal of Lightwave Technology, Journal Name: Journal of Lightwave Technology Journal Issue: 4 Vol. 12; ISSN 0733-8724; ISSN JLTEDG
- Country of Publication:
- United States
- Language:
- English
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