Browsing by UPNA Author "Díaz Lucas, Silvia"
Now showing items 1-20 of 20
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46-km-long Raman amplified hybrid double-bus network with point and distributed Brillouin sensors
We experimentally demonstrate a 46-km hybrid network that combine point and distributed Brillouin sensors. The proposed sensor network multiplexes low-cost intensity point sensors based on fiber-optic tapers, which are ... -
Comparison of wavelength-division-multiplexed distributed fiber Raman amplifier networks for sensors
A novel distributed fiber Raman amplified star topology used for optical sensor wavelength-division multiplexing is proposed. The performance of this star configuration is compared to an optically amplified bus topology. ... -
Dual-wavelength single-longitudinal-mode erbium fiber laser for temperature measurements
A dual-wavelength erbium fiber laser with single-longitudinal-mode characteristic is proposed and demonstrated. The system uses a 7-m-long highly doped erbium-doped fiber as the primary gain medium while two fiber Bragg ... -
Fiber-based early diagnosis of venous thromboembolic disease by label-free D-dimer detection
D-dimer is a useful diagnostic biomarker for deep vein thrombosis or pulmonary embolism, collectively referred to as venous thromboembolism (VTE). The ability to detect in real-time the amount of D-dimer with a fast and ... -
Fiber-based label-free D-dimer detection for early diagnosis of venous thromboembolism
D-dimer is a useful diagnostic biomarker for deep vein thrombosis or pulmonary embolism, collectively referred to as venous thromboembolism (VTE). The ability to detect in real-time the amount of D-dimer with a fast and ... -
Gaze estimation: a mathematical challenge
El interés en los sistemas de eye tracking está creciendo significativamente en la actualidad. Aunque la tecnología de eye tracking puede parecer nueva, el estudio del movimiento del ojo ya empezó a principios del siglo ... -
Initiative to increment the number of women in STEM degrees: women, science and technology chair of the Public University of Navarre
The Public University of Navarre joined with Navarre Government has created the Women, Science and Technology Chair. This chair arises due to the plummeting tendency of the percentage of women in STEM degrees with the aim ... -
Long-range hybrid network with point and distributed Brillouin sensors using Raman amplification
We propose a novel concept for hybrid networks that combine point and distributed Brillouin sensors in a cost-effective architecture that also deploys remote distributed Raman amplification to extend the sensing range. A ... -
Monitoring of water freeze-thaw cycle by means of an etched single-mode - multimode - single-mode fiber-optic refractometer
As an alternative to the different technologies that permit the detection of in-situ ice formation on different surfaces, this contribution proposes the design of an etched single-mode – multimode – single-mode (E-SMS) ... -
Monitoring the etching process in LPFGs towards development of highly sensitive sensors
In this work, the monitoring of the etching process up to a diameter of 30 µm of two LPFG structures has been compared, one of them had initially 125 µm, whereas the second one had 80 µm. By tracking the wavelength shift ... -
Multimode – coreless – multimode fiber-based sensors: theoretical and experimental study
This paper presents a complete study on the spectral behavior of a multimode-coreless-multimode fiber-optic structure, as well as its application as a refractometer and a liquid level sensor. The combination of two standard ... -
New multiplexing structures for fiber optic sensors
El campo de la fibra óptica ha sufrido una rápida evolución durante las últimas décadas debido a sus buenas prestaciones en aplicaciones de telecomunicaciones. Aprovechando este avance científico y técnico en componentes ... -
Optical fiber bus protection network to multiplex sensors: experimental validation of self-diagnosis
The experimental demonstration of a resilient wavelength division multiplexed (WDM) fiber bus network to interconnect sensors is reported. The network recovers operation after failures and it performs 'self-diagnosis', the ... -
Optical system based on multiplexed FBGs to monitor hand movements
This contribution reports the development and characterization of an optical system based on parallel Fiber Bragg Gratings (FBGs) to monitor the movements of the wrist and fingers of a hand. The system consisted of a ... -
Resilient amplified double ring optical networks to multiplex optical fibre sensors
We report the experimental demonstration of two configurations of an amplified optical fibre double ring network for the multiplexing of sensors. The networks are designed to be inherently resilient to fibre failures because ... -
Route towards a label-free optical waveguide sensing platform based on lossy mode resonances
According to recent market studies of the North American company Allied Market Research, the field of photonic sensors is an emerging strategic field for the following years and it is expected to garner $18 billion by ... -
Sensitivity enhancement in low cutoff wavelength long-period fiber gratings by cladding diameter reduction
The diameter of long-period fiber gratings (LPFGs) fabricated in optical fibers with a low cutoff wavelength was be reduced by hydrofluoric acid etching, enhancing the sensitivity to refractive index by more than a factor ... -
Stable multi-wavelength erbium fiber ring laser with optical feedback for remote sensing
In this work, we demonstrate a stable fiber sensing system for remote temperature measurements, where the sensing element is an array of four fiber Bragg gratings (FBGs) and sensor interrogation is achieved with a ... -
Temperature sensor using a multiwavelength erbium-doped fiber ring laser
A novel temperature sensor is presented based on a multiwavelength erbium-doped fiber ring laser.The laser is comprised of fiber Bragg grating reflectors as the oscillation wavelength selecting filters.The performance of ... -
WDM bi-directional transmission over 35 km amplified fiber-optic bus network using Raman amplification for optical sensors
We demonstrate a novel distributed fiber Raman amplified bus topology used for WDM transmission over 35 km of single-mode fiber by use of a multiwavelength Raman pump laser and eight Fiber Bragg gratings (FBGs). This ...