An interrogation technique of FBG cascade sensors using wavelength to radio-frequency delay map**

J Hervás, CR Fernández-Pousa, D Barrera… - Journal of Lightwave …, 2015 - opg.optica.org
A technique is proposed to interrogate a distributed photonic sensor composed of seven
standard fiber Bragg gratings in cascade. A microwave-modulated optical signal is launched …

KLT-based interrogation technique for FBG multiplexed sensor tracking

J Hervás, D Tosi, H García-Miquel… - Journal of Lightwave …, 2017 - opg.optica.org
The Karhunen–Loeve transform (KLT) is used to retrieve the wavelength information of
several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated …

FBGs cascade interrogation technique based on wavelength-to-delay map** and KLT analysis

J Hervás, D Barrera… - … Workshop on Optical …, 2016 - spiedigitallibrary.org
The Karhunen-Loeve transform is applied to the coarsely sampled impulse response
generated by an FBG cascade in order to calculate the temperature change suffered by the …