G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/02 (2006.01) H04B 10/18 (2006.01)
Patent
CA 2213149
A dispersion compensating optical fiber is connected to an optical fiber having chromatic dispersion at a transmission wavelength to cancel the chromatic dispersion out, thereby making the chromatic dispersion of an entire transmission system at the transmission wavelength substantially zero or making the chromatic dispersion close to zero. The dispersion compensating optical fiber comprises a core consisting of a quartz-based glass and a cladding formed on the surface of the core and consisting of a quartz-based glass, and a coating layer formed on the surface of the cladding and consisting of a resin, and the dispersion compensating optical fiber has an outer diameter of less than 250 µm. The coating layer has a thickness of 20 µm or more and a two-layer structure consisting of at least two layers including an inner layer and an outer layer having a Young's modulus higher than that of the inner layer.
Fibre optique à compensation de dispersion, connectée à une fibre optique présentant une dispersion chromatique sur une longueur d'onde de transmission. Ladite fibre annule la dispersion chromatique en la ramenant essentiellement à zéro ou près de zéro pour l'ensemble d'un système de transmission sur la longueur d'onde de transmission. Elle comprend un coeur en verre à base de quartz, recouvert d'une gaine en verre à base de quartz, ainsi qu'un revêtement de gaine composé d'une résine. La fibre a un diamètre extérieur de moins de 250 µm. Le revêtement a au moins 20 µm d'épaisseur et une structure composée d'au moins deux couches, dont une interne et une externe, cette dernière ayant un module de Young plus élevé que celui de la couche interne.
Akasaka Youichi
Kamiya Tamotsu
Sugizaki Ryuichi
Ridout & Maybee Llp
The Furukawa Electric Co. Ltd.
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