4.5 Article

Dual-Wavelength Differential Detection of FBGs Using a Frequency-Scanning Pulsed Laser

Journal

IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 34, Issue 23, Pages 1261-1264

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2022.3210929

Keywords

Fiber gratings; Reflection; Frequency modulation; Semiconductor optical amplifiers; Measurement by laser beam; Temperature measurement; Semiconductor laser arrays; Distributed feedback laser array; dual-wavelength differential detection; fiber Bragg grating; interrogation

Ask authors/readers for more resources

The dual-wavelength differential detection technique of fiber Bragg gratings is described in this study. A directly modulated distributed-feedback laser array is used as a frequency-scanning pulsed light source. By measuring two serially connected Bragg gratings using the pulse trains, the selectivity of high-sensitivity measurement, wide measurement range, and the potential for expansion to time-division multiplexing systems are demonstrated.
The dual-wavelength differential detection of fiber Bragg gratings is reported. A directly modulated distributed-feedback laser array is used as a frequency-scanning pulsed light source. Trains of four 100-ns pulses with a frequency drift of 6.5 GHz and the same intensity are generated. Interrogating two serially connected Bragg gratings using the pulse trains, we show the selectivity of the high-sensitivity measurement and the wide measurement range, and the possibility of expansion to time-division multiplexing systems with a simple setup.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available