Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1991-06-06
1992-04-21
Healy, Brian
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
385 14, 385132, 385142, 372 7, 372 43, 372 68, G02B 610, H01S 330
Patent
active
051075385
ABSTRACT:
It has been discovered that co-doping of Er-doped Si with a light element such as C, N or F can result in substantially increased Er luminescence. A further increase in luminescence can result if, in addition, oxygen is present in the Si. Apparatus or systems according to the invention comprise a device (e.g., laser, optical ampifier, LED) that comprises a planar waveguide whose core region contains, in addition to at least 90 atomic % Si or SiGe alloy, Er, Pr and/or Nd, and further contains C, N and/or F, and preferably also contains oxygen. Currently preferred apparatus or systems according to the invention comprise means for electrically pumping the waveguide means.
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"Waveguided Electro-Optical Intensity Modulation in a Si/Ge.sub.x Si.sub.1-x /Si Heterojunction Bipolar Transistor", by R. D. Lareau et al., Electronics Letters, vol. 26, No. 20, Sep. 27, 1990, pp. 1653-1655.
Benton Janet L.
Jacobson Dale C.
Kimerling Lionel C.
Michel Jurgen
Poate John M.
AT&T Bell Laboratories
Healy Brian
Pacher Eugen E.
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