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Multiplexed strain sensor using fiber grating-tuned fiber laser with a semiconductor optical amplifier

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4 Author(s)
Sungchul Kim ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Jaejoong Kwon ; Seungwoo Kim ; Byoungho Lee

A novel fiber Bragg grating sensor system using a fiber laser with a semiconductor optical amplifier as a gain medium is proposed. The inhomogeneous broadening property of the semiconductor optical amplifier is used to generate multiple wavelength operation, which was not possible in an erbium-doped fiber laser due to the homogeneous broadening property. Using a semiconductor optical amplifier, the sensor system can involve multiple point sensor heads, which is an eight-point sensor in the initial experiment.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 4 )

Date of Publication:

April 2001

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