This highly adaptable multi-laser source can address various sensing applications requiring the tracking of up to three narrow spectral features with a high bandwidth. It is used to sense a fiber-based ring resonator emulating a resonant fiber optics gyroscope. The master laser is locked to the resonator with a loop bandwidth greater than 1 MHz. The slave lasers are offset frequency locked to the master laser with loop bandwidths greater than 100 MHz. This high performance source is compact, automated, robust, and remains locked for days.
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S. Ayotte, F. Costin, A. Babin, G. Paré-Olivier, M. Morin, B. Filion, K. Bédard, P. Chrétien, G. Bilodeau, E. Girard-Deschênes, L.-P. Perron, C.-A. Davidson, D. D'Amato, M. Laplante, J. Blanchet-Létourneau, "Compact silicon photonics-based multi laser module for sensing," Proc. SPIE 10537, Silicon Photonics XIII, 1053717 (22 February 2018);