Optical frequency domain reflectometry damage sensor based on a laser diode sweep generator for smart structures and skins

Igor G. Goncharov; Alexander P. Grachev; Oleg V. Kazharsky; Alexander K. Matveev; Yury A. Mironov

doi:10.1117/12.166864

7 February 1994 Optical frequency domain reflectometry damage sensor based on a laser diode sweep generator for smart structures and skins

Igor G. Goncharov, Alexander P. Grachev, Oleg V. Kazharsky, Alexander K. Matveev, Yury A. Mironov

Author Affiliations +

Proceedings Volume 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation; (1994) https://doi.org/10.1117/12.166864
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

The paper discusses an application of the optical frequency-domain reflectometry method for damage and stress fiber sensors embedded in composites. Proposed sensor is based on an optical sweep generator with an external cavity laser diode. This diode provides a single frequency CW generation with 0.85-micron wavelength and maximum sweep rate up to 10,000 GHz/s. Under those conditions one can reach the optical frequency shift of 100 kHz/m in fiber. The spatial resolution of 10 cm in 100-m embedded fiber while determining a position of a damage was obtained.

Citation Download Citation

Igor G. Goncharov, Alexander P. Grachev, Oleg V. Kazharsky, Alexander K. Matveev, and Yury A. Mironov "Optical frequency domain reflectometry damage sensor based on a laser diode sweep generator for smart structures and skins", Proc. SPIE 2072, Fiber Optic Physical Sensors in Manufacturing and Transportation, (7 February 1994); https://doi.org/10.1117/12.166864

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