Optical waveguides – Optical fiber waveguide with cladding
Reexamination Certificate
2008-07-08
2009-11-17
Kianni, K. Cyrus (Department: 2883)
Optical waveguides
Optical fiber waveguide with cladding
C385S048000
Reexamination Certificate
active
07620281
ABSTRACT:
The present invention provides nanometer-sized diameter silica fibers that exhibit high diameter uniformity and surface smoothness. The silica fibers can have diameters in a range of a about 20 nm to about 1000 nm. An exemplary method according to one embodiment of the invention for generating such fibers utilizes a two-step process in which in an initial step a micrometer sized diameter silica preform fiber is generated, and in a second step, the silica preform is drawn while coupled to a support element to form a nanometer sized diameter silica fiber. The portion of the support element to which the preform is coupled is maintained at a temperature suitable for drawing the nansized fiber, and is preferably controlled to exhibit a temporally stable temperature profile.
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Gattass Rafael
Mazur Eric
Tong Limin
Engellenner Thomas J.
Kianni K. Cyrus
Mollaaghababa Reza
Nutter & McClennen & Fish LLP
President & Fellows of Harvard College
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