Optical waveguides – Optical fiber waveguide with cladding – With graded index core or cladding
Reexamination Certificate
2011-08-30
2011-08-30
Stahl, Mike (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
With graded index core or cladding
C385S127000
Reexamination Certificate
active
08009950
ABSTRACT:
A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. The variation in concentration of each dopant and its derivative in relation to the fiber radius are continuous. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
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de Jongh Koen
Lumineau Yves
Molin Denis
Sillard Pierre
Van Lankveld Ralph Petrus Johannes Adrianus
Draka Comteq B.V.
Stahl Mike
Summa, Additon & Ashe, P.A.
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