Optical waveguides – Temporal optical modulation within an optical waveguide
Reexamination Certificate
2005-12-19
2009-08-18
Rahll, Jerry T (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
C359S332000
Reexamination Certificate
active
07577318
ABSTRACT:
The present invention is directed to a wavelength conversion layer (1) with a matrix layer (2) comprising embedded rare-earth-ion-doped micro-crystallites (3) and/or rare-earth-ion-doped amorphous particles, wherein said rare-earth-ion-doped micro crystallites and/or rare-earth-ion-doped amorphous particles are doped with at least one of the lanthanides, and wherein said rare-earth-ion-doped micro-crystallites and/or said doped amorphous particles have a mean diameter d50of 10 nm to 500 müm, and wherein the matrix layer, is transparent, whereby the refractive indices of said rare-earth-ion-doped micro-crystallites and/or said rare-earth-ion-doped amorphous particles match the refractive indices of the matrix layer with an index fifference delta n such as: 0<_delta n<_0.1, for at least one wavelength in the range of 400 nm to 1200 nm.
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Heusler Gero
Mönch Holger
Koninklijke Philips Electronics , N.V.
Rahll Jerry T
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