G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/02 (2006.01) C03B 37/018 (2006.01) C03B 37/075 (2006.01) G02B 6/036 (2006.01)
Patent
CA 2565879
An optical fiber suitable to support single mode optical transmission at longer wavelengths (e.g., 1550 nm) is formed to comprise a pure silica core region and a "down doped" cladding layer. The core region is defined as having a diameter d and the cladding layer is defined has having an outer diameter D. In accordance with the present invention, single mode propagation wí11 be supported when D/d > 8.5, and is preferably in the range of 9 - l 0.
Il est prévu une fibre optique convenant au support d~une transmission optique en mode simple à des longueurs d~onde accrues (par exemple, 1550 nm) pour comprendre une région de noyau de silice pure et une couche de revêtement ~dopée régressive~. La région de noyau se définit comme ayant un diamètre d et la couche de revêtement se définit comme ayant un diamètre externe D. Selon la présente invention, une propagation en mode simple sera supportée si le rapport D/d > 8,5 et de préférence compris dans la plage allant de 9 à 10.
Baker Hughes Incorporated
Sim & Mcburney
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