Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide core
Patent
1995-08-31
1996-10-08
Lee, John D.
Optical waveguides
Having particular optical characteristic modifying chemical...
Of waveguide core
385141, 372 6, G02B 616, H01S 307
Patent
active
055639798
ABSTRACT:
An active optical device comprises a glass, waveguiding structure disposed on a substantially planar principal surface of a substrate. The structure includes a silica-based, erbium-doped active core. The active core has an absolute erbium concentration of at least about 0.5.times.10.sup.20 atoms per cubic centimeter, and a radiative lifetime of the erbium lasing level of at least about 5 milliseconds. The active core does not contain significant amounts of alkali metals or alkaline earth metals but does contain at least two modifier metals. Also disclosed is a method for forming an active optical device, including the step of depositing an erbium-doped active core by sputtering.
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Bruce Allan J.
Grodkiewicz William H.
Nykolak Gerald
Shmulovich Joseph
Wong Yiu-Huen
Botes Richard J.
Lee John D.
Lucent Technologies - Inc.
Palmer Phan T. H.
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