Optical waveguides – Having particular optical characteristic modifying chemical... – Of waveguide core
Patent
1991-06-20
1993-10-12
Healy, Brian
Optical waveguides
Having particular optical characteristic modifying chemical...
Of waveguide core
372 6, 501 37, G02B 616
Patent
active
052533220
ABSTRACT:
The present invention relates to an optical functioning glass containing Nd.sup.+3 as an active ion which amplifies an input light, and at least one other optical active ion different from Nd.sup.+3 which absorbs light at and near 1 .mu.m. The present invention also relates to an optical functioning glass containing Nd.sup.+3 as an active ion which amplifies the input light, and at least one other optical active ion different from Nd.sup.+3 functioning as a promoter. An efficiency of the stimulated emission of Nd.sup.3+ caused by signal light propagated through the optical functioning glass is enhanced and a gain of the light amplification at 1.3 .mu.m is increased.
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Chigusa Yoshiki
Miyajima Yoshiaki
Nakazato Koji
Onishi Masashi
Sugawa Tomoki
Healy Brian
Heartney Phan T.
Sumitomo Electric Industries Ltd.
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