ACTIVE OPTICAL FIBER AND METHOD FOR FABRICATING AN ACTIVE OPTICAL FIBER

A section of active optical fiber (11) which comprises an active core (1), an inner cladding layer (2) and an outer cladding layer (3). The diameter of said core (1) and the thickness of said inner cladding (2) change gradually along the length of said section of active optical fiber (11). This form...

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Bibliographische Detailangaben
Hauptverfasser:	FILIPPOV, VALERY, OKHOTNIKOV, OLEG, CHAMOROVSKIY, YURIY, PESSA, MARKUS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY DEVICES USING STIMULATED EMISSION ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A section of active optical fiber (11) which comprises an active core (1), an inner cladding layer (2) and an outer cladding layer (3). The diameter of said core (1) and the thickness of said inner cladding (2) change gradually along the length of said section of active optical fiber (11). This forms a tapered longitudinal profile enabling a continuous mode conversion process along the length of the section of fiber (11). The method for fabricating a section of tapered active optical fiber comprises the steps of fabricating a preform for drawing active optical fiber from said preform, installing said preform into a drawing tower, drawing optical fiber in said drawing tower and altering at least one of the two parameters including the take-off preform speed and the take-up fiber speed during drawing of the optical fiber. Une section de fibre optique active (11) comprend une âme active (1), une couche de gainage intérieur (2) et une couche de gainage extérieur (3). Le diamètre de ladite âme (1) et l'épaisseur dudit gainage intérieur (2) changent progressivement sur la longueur de ladite section de fibre optique active (11). Cela forme un profil longitudinal effilé permettant un processus de conversion en mode continu sur la longueur de la section de fibre (11). Le procédé de fabrication d'une section de fibre optique active effilée comprend les étapes consistant à fabriquer une ébauche pour étirer une fibre optique active à partir de ladite ébauche, à installer ladite ébauche dans une tour d'étirage, à étirer la fibre optique dans ladite tour d'étirage et à modifier au moins l'un des deux paramètres comprenant la vitesse d'extraction d'ébauche et la vitesse d'enroulement de fibre pendant l'étirage de la fibre optique.