Polymer 1D photonic crystals
AssigneeCase Western Reserve University
InventorsEric Baer, P. Anne Hiltner, James S. Shirk
Life of this patent
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Abstract
A multilayer nonlinear dielectric optical structure is formed by coextruding at least two polymeric materials, components (a) and (b), using a multiplying element; the structure contains a plurality of alternating layers (A) and (B) represented by formula (AB)x, where x=2n, and n is the number of multiplying elements; at least one of the components (a) and (b) exhibits nonlinear optical response. These structures perform a variety of nonlinear optical functions including all-optical switching and passive optical limiting.
Claims53
A multilayer structure comprising,
- a plurality of at least two alternating layers A and B represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 15;
- wherein layer A is comprised of component (a) and layer B is comprised of component (b);
- wherein at least one of components (a) and (b) is an organic polymeric material containing a nonlinear dye and exhibiting nonlinear optical response;
- and
- wherein said organic polymeric material is selected from the group consisting of polyethylene naphthalate, isomers of polyethylene naphthalate, polyalkylene terephthalates, polyetherimides, a styrenic polymer, a polycarbonate, a poly(meth)acrylate, a cellulose derivative, a polyalkylene polymer, a fluorinated polymer, a chlorinated polymer, a polyethersulfone, polyacrylonitrile, a polyamide, polyvinylacetate, a polyetheramide, a styrene-acrylonitrile copolymer containing between 10 and 50 wt % acrylonitrile, a styrene-ethylene copolymer, poly(ethylene-1,4-cyclohexylenedimethylene terephthalate) and blends thereof.
A multilayer structure comprising,
- a plurality of at least two alternating layers A and B represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 15;
- wherein layer A is comprised of component (a) and layer B is comprised of component (b);
- wherein at least one of components (a) and (b) exhibits nonlinear optical response;
- and
- wherein said component (a) is an oligomeric material (A) and said component (b) is an oligomeric material (A) containing a nonlinear dye.
A multilayer structure comprising,
- a plurality of at least two alternating layers A and B represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 15;
- wherein layer A is comprised of component (a) and layer B is comprised of component (b);
- wherein at least one of components (a) and (b) exhibits nonlinear optical response;
- and
- wherein the difference in the refractive index of component (a) and component (b) is 0.
A multilayer structure comprising, a plurality of at least two alternating layers A and B represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 15;
- wherein layer A is comprised of component (a) and layer B is comprised of component (b);
- wherein at least one of components (a) and (b) is an organic polymeric material containing a nonlinear dye and exhibiting nonlinear optical response;
- and
- wherein said component (a) is a styrene-acrylonitrile copolymer containing 20 wt % of acrylonitrile and component (b) is a styrene-acrylonitrile copolymer containing 25 wt % of acrylonitrile.
Dependencies are inferred from the claim text.