{"record":{"leader":"cx  r22     2  45","datafield":[{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"20171021afrey50      ba0"},"tag":100},{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":"fre"},{"code":2,"content":"639-2"}],"tag":101},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":2016},"tag":103},{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":"k"},{"code":"f","content":"fre"}],"tag":104},{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":0},{"code":"b","content":"#"},{"code":"c","content":"#"}],"tag":106},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"AFNOR"},"tag":152},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"Oeuvre Textuelle"},"tag":189},{"ind2":" ","ind1":" ","subfield":[{"code":7,"content":"ba0yba0"},{"code":"t","content":"Élaborations et caractérisations de fibres optiques microstructurées en verres de chalcogénures pour le moyen infrarouge"}],"tag":241},{"ind2":" ","ind1":" ","subfield":[{"code":7,"content":"ba0yba0y"},{"code":"a","content":"Les verres de chalcogénures combinent plusieurs propriétés : une transparence étendue dans l\u2019infrarouge, un indice de réfraction élevé (n>2) et de fortes propriétés non-linéaires. La réalisation de fibres optiques microstructurées (FOMs) permet d\u2019exacerber les effets non-linéaires et notamment en faisant varier les paramètres optogéométriques des fibres (d et Λ). Ainsi, des fibres à propagation monomode peuvent être obtenues ou encore des fibres dont les applications potentielles concernent l\u2019optique active avec la génération d\u2019effets non-linéaires. La réalisation de telles fibres passent par la synthèse de verres de chalcogénures de haute pureté. Par conséquent, les bandes d\u2019absorption limitant la transparence des fibres doivent être identifiées et limitées au maximum. Pour cela, le suivi et la qualification des éléments utilisés lors de la synthèse des verres doivent être entrepris. Un protocole de synthèse et de purification par traitements thermiques a été mis en place en ce sens. La technique pour élaborer les FOMs en verres de chalcogénures est le moulage. Elle consiste à couler un verre dans un moule entièrement réalisé en silice. Ce dernier présente la géométrie inverse de la fibre désirée. Cette méthode permet d\u2019obtenir des géométries variées et reproductibles en passant par des fibres monomodes et multimodes avec des diamètres de cœur allant de 2 μm jusqu\u2019à plus de 20 μm. La réalisation de sources infrarouges a été développée dans le manuscrit. Cela a été rendu possible dans un premier temps par la génération d\u2019un supercontinuum à l\u2019aide d\u2019une fibre à cœur suspendu puis par la réalisation d\u2019un laser à cascade quantique (QCL) couplé à une fibre monomode. De plus, une fibre à maintien de la polarisation (FMP) dans le moyen infrarouge, présentant une biréfringence de groupe de l\u2019ordre de 10-3 a été élaborée grâce à l\u2019évolution du moule de silice. De plus, un coupleur tout-optique, une fibre toute-solide et un faisceau de fibres infrarouges complètent les réalisations obtenues au cours de cette thèse."}],"tag":300},{"ind2":" ","ind1":" ","subfield":[{"code":7,"content":"ba0yba0y"},{"code":"a","content":"Chalcogenide glasses combine several properties : large transparency in the infrared range, a high refractive index (n>2) and strong non-linear properties. The realization of microstructured optical fibers (MOFs) exacerbates non-linear effects more particularly by varying the opto-geometrical parameters of the fibers (d and Λ). Thus, single-mode propagation can be obtained and also generation of non-linear effects. The realization of high purity chalcogenide glasses is needed. In fact, absorption bands limiting the transparency of the fibers must be identified and minimized. For this, monitoring and qualification of components used in the synthesis of glasses should be undertaken. A protocol of synthesis and purification by heat treatment was implemented in this direction. The technique to elaborate MOFs is the casting method. It consists of flowing a glass on a silica mold. The geometry is the negative shape of the desired fiber. This method allows the realization of multimode or single-mode fiber in the 1-10 μm window. The realization of infrared sources was developed in the manuscript. The generation of a supercontinuum with a suspended-core fiber has been presented and also by the realization of a quantum cascade laser (QCL) coupled into a singlemode fiber. In addition, a polarization-maintaining fiber (PMF) having a group birefringence of the order of 10-3 was developed through the evolution of the silica mold. In addition, an optical coupler, an all-solid fiber and an infrared bundle were achieved during this thesis."}],"tag":300},{"ind2":0,"ind1":" ","subfield":[{"code":"b","content":"Thèse de doctorat"},{"code":"c","content":"Sciences des matériaux"},{"code":"e","content":"Rennes 1"},{"code":"d","content":2016}],"tag":328},{"ind2":" ","ind1":" ","subfield":[{"code":7,"content":"ba0yba0"},{"code":"t","content":"Preparation and characterization of chalcogenide microstructured optical fibers for the mid-infrared"}],"tag":441},{"ind2":1,"ind1":" ","subfield":[{"code":3,"content":197767834},{"code":7,"content":"ba0yba09"},{"code":"a","content":"Caillaud"},{"code":"b","content":"Céline"},{"code":"f","content":"1989-...."},{"code":4,"content":"070"}],"tag":501},{"ind2":1,"ind1":" ","subfield":[{"code":3,"content":"069128561"},{"code":7,"content":"ba0yba09"},{"code":"a","content":"Troles"},{"code":"b","content":"Johann"},{"code":"f","content":"19..-...."},{"code":4,"content":727}],"tag":501},{"ind2":2,"ind1":0,"subfield":[{"code":3,"content":"02778715X"},{"code":7,"content":"ba0yba09"},{"code":"a","content":"Université de Rennes 1"},{"code":"c","content":"1969-2022"},{"code":4,"content":295}],"tag":511},{"ind2":2,"ind1":0,"subfield":[{"code":3,"content":139061916},{"code":7,"content":"ba0yba09"},{"code":"a","content":"École doctorale Sciences de la matière"},{"code":"c","content":"Rennes"},{"code":"c","content":"1996-2016"},{"code":4,"content":996}],"tag":511},{"ind2":2,"ind1":0,"subfield":[{"code":3,"content":191639044},{"code":7,"content":"ba0yba09"},{"code":"a","content":"Université Bretagne Loire"},{"code":"c","content":"2016-2019"},{"code":4,"content":985}],"tag":511},{"ind2":2,"ind1":0,"subfield":[{"code":3,"content":161775241},{"code":7,"content":"ba0yba09"},{"code":"a","content":"Institut des Sciences Chimiques de Rennes"},{"code":4,"content":981}],"tag":511},{"ind2":" ","ind1":" ","subfield":[{"code":3,"content":196311489},{"code":"a","content":"Verres de chalcogénures"},{"code":2,"content":"rameau"}],"tag":606},{"ind2":" ","ind1":" ","subfield":[{"code":3,"content":"027355314"},{"code":"a","content":"Fibres optiques"},{"code":2,"content":"rameau"}],"tag":606},{"ind2":" ","ind1":" ","subfield":[{"code":7,"content":"ba0yba0"},{"code":3,"content":"027253139"},{"code":"a","content":"Thèses et écrits académiques"},{"code":2,"content":"rameau"}],"tag":608},{"ind2":" ","ind1":0,"subfield":{"code":"a","content":"Chalcogénure"},"tag":610},{"ind2":" ","ind1":0,"subfield":{"code":"a","content":"Infrarouge"},"tag":610},{"ind2":" ","ind1":0,"subfield":{"code":"a","content":"Fibre optique microstructurée"},"tag":610},{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":540},{"code":2,"content":"TEF"}],"tag":686},{"ind2":3,"ind1":" ","subfield":[{"code":"a","content":"FR"},{"code":"b","content":"Abes"},{"code":"c","content":20260403},{"code":"g","content":"AFNOR"}],"tag":801}],"controlfield":[{"tag":"001","content":212768212},{"tag":"003","content":"http://www.idref.fr/212768212"},{"tag":"004","content":20171021},{"tag":"005","content":20260403021027},{"tag":"006","content":"0499"},{"tag":"007","content":"0499"},{"tag":"008","content":"Tr2"}]}}