H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/17 (2006.01) C03B 37/027 (2006.01) C03B 37/03 (2006.01) C03C 25/10 (2006.01) G02B 6/10 (2006.01) H01S 3/067 (2006.01)
Patent
CA 2210470
A single mode optical fiber (36) suitable for use in an amplified fiber optic system (30) which includes an inner glass core doped with rare earth element and an outer transparent glass cladding. The fiber (36) exhibits a plurality of mode coupling sites formed at regular intervals along the length (L) of the fiber (36) which provides for a reduced DOP (Degree of Polarization). The sites are formed by a twist at regular intervals along the fiber length (L) by applying a torque to the fiber (36). The method of forming the fiber is also disclosed.
Fibre optique (36) à mode unique adaptée pour être utilisée dans un système (30) amplifié à fibres optiques, cette fibre comprenant une âme en verre dopée avec un métal des terres rares, et un revêtement extérieur en verre transparent. La fibre (36) présente une pluralité de sites de couplage de mode formés à intervalles réguliers sur la longueur (L) de la fibre (36), ceci assurant un degré de polarisation (DDP) réduit. Pour former les sites on applique une force de torsion sur la fibre (36) ceci formant une torsade à intervalles réguliers sur la longueur (L) de la fibre. Le procédé de fabrication de la fibre est également décrit.
Evans Alan Frank
Nolan Daniel Aloysius
Corning Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
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