Dissertation/ Thesis
Study of photonic crystals on thin film lithium niobate for sensing applications - design, fabrication and characterization ; Etude de cristaux photoniques sur couche mince de niobate de lithium pour l’application de capteurs - conception, fabrication et caractérisation
| العنوان: | Study of photonic crystals on thin film lithium niobate for sensing applications - design, fabrication and characterization ; Etude de cristaux photoniques sur couche mince de niobate de lithium pour l’application de capteurs - conception, fabrication et caractérisation |
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| المؤلفون: | Qiu, Wentao |
| المساهمون: | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC), Université de Franche-Comté, Maria-Pilar Bernal-Artajona, Fadi Issam Baida |
| المصدر: | https://theses.hal.science/tel-01651196 ; Optics [physics.optics]. Université de Franche-Comté, 2016. English. ⟨NNT : 2016BESA2060⟩. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2016 |
| المجموعة: | Université de Franche-Comté (UFC): HAL |
| مصطلحات موضوعية: | Photonic crystals, Photonic sensors, Lithium niobate, Electro-optic effect, Guided resonance, Cristaux photoniques, Capteurs photoniques, Niobate de lithium, Effet de électro-optique, Effet de pyro-electrique, Résonance guidée, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] |
| الوصف: | Light is incredibly versatile for measuring all kinds of physical quantities :temperature, electric field (E-field), displacement and strain etc. Photonic sensors are promising candidates for the new generation of sensors developments due to their virtues of high sensitivity, large dynamic range and compact size etc. Integrated and on-fiber end photonic sensors on thin film lithium niobate (TFLN) exploring the electro-optic (EO) and pyro-electric effects are studied in this thesis in order to design E-field sensors and temperature sensors (T-sensors). These studies aim to develop sensors with high sensitivity and compact size. To achieve that aim, sensors that are made of photonic crystals (PhC) cavities are studied by sensing the measurand through the resonance wavelength interrogation method. In integrated sensor studies, intensive numerical calculations by PWE method, mode solving technique and FDTD methods are carried out for the design of high light confinement waveguiding structures on TFLN and suitable PhC configurations. Four types of waveguide (WG) structures (ridge WG, strip loaded WG, slot WG and double slot WG) are studied with a large range of geometrical parameters. Among them, slot WG yields the highest confinement factor while strip loaded WG is an easier option for realizations. Bragg grating is designed in slot WG with an ultra compact size (about 0.5µm×0.7µm ×6µm) and is employed to design PhC cavity. A moderate resonance Q of about 300 in F-P like cavity where the mirrors are made of PhC is achieved with ER of about 70% of the transmission. Theoretical minimum E-field sensitivity of this slot Bragg grating structure can be as low as 200 µV/m. On the other hand, Si3N4 strip loaded WG is designed with 2D PhC structure and a low resonance Q of about 100 is achieved. Fabrications of nano-metrical WG such as ridge WG Si3N4 strip loaded are demonstrated. However, the realization of nanometric components on LN presents a big challenge.In the on-fiber end sensor studies, guided resonance, oftentimes ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| Relation: | NNT: 2016BESA2060; tel-01651196; https://theses.hal.science/tel-01651196; https://theses.hal.science/tel-01651196/document; https://theses.hal.science/tel-01651196/file/these_A_QIU_Wentao_2016.pdf |
| الاتاحة: | https://theses.hal.science/tel-01651196 https://theses.hal.science/tel-01651196/document https://theses.hal.science/tel-01651196/file/these_A_QIU_Wentao_2016.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.AD1FFB86 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |