Miguel Soto, Verónica de
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Miguel Soto
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Verónica de
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Ingeniería Eléctrica y Electrónica
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Publication Open Access Fully switchable multi-wavelength fiber lasers based on random distributed feedback for sensors interrogation(IEEE / OSA, 2015) Bravo Acha, Mikel; Miguel Soto, Verónica de; Ortigosa Cayetano, Amaia; López-Amo Sáinz, Manuel; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaIn this paper, the experimental study and characterization of a novel real-time switchable multi-wavelength fiber laser has been carried out. Two different gain materials, such as a 50 km SMF and a 2.5 km DCF fibers were characterized and compared, respectively. The MWFL can generate any wavelength combination with an emission lines distance of 50, 100 and 200 GHz fitting the ITU grid specifications. By using both Er-doped fiber and Raman amplification, a ~30 nm wide lasing window at the C band can be utilized to create up to 30 different lasing wavelengths into the ITU Grid, that can be switched automatically and in real-time when desired. Utilization of such a laser for versatile interrogation of different sensing networks is also shown.Publication Open Access Random fiber lasers: application to fiber optic sensors networks(IEEE, 2017) López-Amo Sáinz, Manuel; Leandro González, Daniel; Miguel Soto, Verónica de; Bravo Acha, Mikel; Fernández Vallejo, Montserrat; Pérez Herrera, Rosa Ana; Ingeniaritza Elektrikoa eta Elektronikoa; Institute of Smart Cities - ISC; Ingeniería Eléctrica y ElectrónicaRecently, random mirrors have been proposed as a method to create fiber laser cavities. This kind of cavity is based on cooperative Rayleigh scattering, which is generated along a fiber due to the material inhomogeneities presented in that fiber. In this work, basics of Random fiber lasers and different demonstrated lasing sensors systems for interrogating arrays of optical fiber sensors are shown. These systems use different kinds of amplification and cavities schemes and can interrogate optical fiber sensors located up to 225 km away.Publication Open Access Random DFB fiber laser for remote (200 km) sensor monitoring using hybrid WDM/TDM(IEEE, 2016) Leandro González, Daniel; Miguel Soto, Verónica de; Pérez Herrera, Rosa Ana; Bravo Acha, Mikel; López-Amo Sáinz, Manuel; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaIn this paper, a random distributed feedback fiber laser is proposed as a multiplexing scheme for ultralong range measurements (up to 200 km). Optical fiber sensors are time and wavelength multiplexed overcoming one of the main limitations of long-range sensing setups, which is their limited multiplexing capability. The direct modulation of the laser's cavity allows the interrogation of sensors by measuring the reflected power for different wavelengths and distances. Fiber Bragg gratings placed at different fiber locations and wavelengths have been interrogated in two different sensor networks. In addition, in order to improve the performance of the system, some features have been analyzed.Publication Open Access Fully-switchable multi-wavelength fiber laser based interrogator system for remote and versatile fiber optic sensors multiplexing structures(SPIE, 2014-06-02) Bravo Acha, Mikel; Miguel Soto, Verónica de; Ortigosa Cayetano, Amaia; López-Amo Sáinz, Manuel; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaA novel interrogation system for multiple fiber optic sensor technologies and based on a fully-switchable multiwavelength fiber laser (MWFL) is proposed and experimentally demonstrated. The MWFL can generate any wavelength combination with a minimum emission line distance up to 50 GHz fitting the ITU grid specifications. On the other hand, as proof of concept sensor network, two different networks were multiplexed by using a remote powered by light fiber optic switch. They are based on two different sensor technologies. One of them based on PCF intensity sensors and multiplexed by using an 8 port WDM and the other one based on wavelength temperature/strain FBG sensors.