The authors report a novel technique for interrogating a network of intracavity absorption sensors. The technique is based on a mode-locking principle where different sensors are addressed by their associated mode-locking frequencies. Experiments with a two-sensor network demonstrated negligible crosstalk between sensors and a sensitivity of 128 times better than that of a single-pass direct absorption sensor.
- intra-cavity sensing
- network based
- fibre laser
Zhang, Y., Jin, W., Yu, H. B., Zhang, M., Liao, Y. B., Ho, H. L., ... Li, Y. H. (2002). Novel intra-cavity sensing network based on mode-locked fibre laser. IEEE Photonics Technology Letters, 14(9), 1336-1338. https://doi.org/10.1109/LPT.2002.801116