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US 6,800,424 B2Granted
Optical devices made from radiation curable fluorinated compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorsBaopei Xu, Louay Eldada, Robert A. Norwood, Robert Blomquist
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Abstract
The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.
Claims8
A light-guiding optical element comprising:
- a) an organic upper cladding layer;
- b) an organic light transmissive core comprising a fluoropolymer including at least one perfluorinated substituent selected from the group consisting of
- —(CF2)x—,
- —CF2O—[(CF2CF2O)m(CF2O)n]—CF2—,
- —CF(CF3)O(CF2)4O[CF(CF3)CF2O]pCF(CF3)—, and
- —CF2O—(CF2CF2O)m—CF2—,
- where x is 1-10, m and n designate the number of randomly distributed perfluoroethyleneoxy and perfluoromethyleneoxy backbone repeating subunits, respectively, and p designates the number of —CF(CF3)CF2O— backbone repeating subunits;
- c) an organic lower cladding layer;
- and
- d) a substrate.
7 more elements
Dependencies are inferred from the claim text.