A micro Fabry-Perot interferometer(M-FPI) is constructed by splicing a short section of polarizationmaintaining photonic crystal fiber(PM-PCF) to an end-cleaved single-mode fiber with controllable offset. Due to the high effective optical path difference induced by the solid core of the PCF,the M-FPI has an ultrasmall cavity of approximately 110μm.The temperature sensitivity within a range from 33℃to approximately 600℃is measured to be 13.8 pm/℃,which shows good agreement with the theoretical result.This proposed sensor has the advantages of ultracompact size and high stability.Therefore,it is suitable for various space-limited sensing applications in harsh environments.

High-temperature sensor using a Fabry-Perot interferometer based on solid-core photonic crystal fiber

The importance of wavelength-division-multiplexing (WDM) optical fiber systems has increased exponentially during the first decade of this century mainly in telecommunication systems.
Simultaneously, the adoption of this appealing technology to the sensor multiplexing systems field, together with optical amplification has opened a new research line with a wide range of practical applications principally in the monitoring of huge or/and smart structures. Because of this, the development and experimental demonstration of some optical active sensor networks has been carried out in this work. The three principal challengers thy pose have been addressed: multipliwing a numbre of optical sensors on a single network while ensuring good signal quality; guareanteeing service continuity in the event of point failure (s) on the network and finally, enabling the possibility of remote sensing. Most of these systems are based on multiwavelength fiber laser configuration which are especially oriented towards photonic sensor multiplexing. For this reason, a thoroughly study of different multiwalength fiber lasers also has an important role in this work.

Contribution to the development of optical networks for fiber optic sensors using fiber lasers

Este trabajo se ha llevado a cabo gracias a las aportaciones economicas recibidas
de los siguientes organismos y proyectos:
- Universidad Publica de Navarra mediante la ayuda de investigacion
predoctoral, la ayuda para movilidad y las ayudas complementarias a
tesis doctorales.
- Secretaria de Estado de Investigacion, Desarrollo e Innovacion, Ministerio
de Economia y Competitividad de Espana a traves del programa de
Formacion del Personal Investigador y asociado al proyecto de investigacion
TEC2010-20224-C02-01.
- Proyecto de investigacion TEC2013-47264-C2-2-R a traves del Fondo
Europeo de Desarrollo Regional (FEDER).
- Accion Europea COST- TD1001: Novel and Reliable Optical Fibre Sensor
Systems for Future Security and Safety Applications (OFSeSa)
- Proyecto INTERREG SUDOE Project “ECOAL-MGT - Ecological Management
of Coal Waste Piles, SOE3/P2/P714”.
- Ministerio de Economia y Competitividad de Espana a traves del Proyecto
campus de excelencia-Iberus (Innocampus).
- Grupo de investigacion Comunicaciones Opticas y Aplicaciones Electronicas
de la Universidad Publica de Navarra mediante la financiacion
de material y participacion en congresos.

Development of advanced structures for optical fiber lasers and sensors

Fiber Optic Smart Structures

The work presented in this thesis was accomplished due to different financial supports, as well as co-work relationships inside of the university and outside during research times developed abroad. Due to the financial support obtained, thanks should be pay to: Spanish Government project TEC 2013-47264-C2-2-R; Innocampus and the INTERREG SUDOE Project “ECOAL-MGT-Ecological Management of Coal Waste Piles, SOE3/P2/P714”; As well as FEDER founds; Spanish Government project TEC 2016-76021-C2-1-R; Cost action MP1401;

Development of new punctual optical fiber transducer for sensing

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Development of new punctual optical fiber transducer for sensing