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US 7,068,420 B2Granted
Low cost optical amplifier
OwnerLuigi Tallone, Carlo De Bernardiinventors
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Abstract
An optical amplifier includes a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region with Si nanocrystals dispersed in an erbium doped glass matrix. A light source is arranged to irradiate the optical waveguide with pump electromagnetic radiation. The amplifier also includes means for suitably shaping an input electromagnetic field to be amplified into the active region of the optical waveguide.
Claims14
An optical amplifier comprising:
- a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region,
- a pump source arranged to irradiate the optical waveguide with electromagnetic radiation, and
- a suitable shaped reflective element for concentrating a signal into the active region of the optical waveguide, wherein the irradiation of the optical waveguide is orthogonal to the plane of propagation of the signal,
- wherein the suitable shaped reflective element is arranged such that the signal under goes total internal reflection off said element.
1 more element
An optical amplifier comprising:
- a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region,
- a pump source arranged to irradiate the optical waveguide with electromagnetic radiation, and
- a suitable shaped reflective element for concentrating a signal into the active region of the optical waveguide, wherein the suitable shaped reflective element is an elliptical mirror, and wherein the irradiation of the optical waveguide is orthogonal to the plane of propagation of the signal.
An optical amplifier comprising:
- a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region,
- a pump source arranged to irradiate the optical waveguide with electromagnetic radiation, and
- a suitable shaped reflective element for concentrating a signal into the active region of the optical waveguide, wherein the suitable shaped reflective element is a pair of parabolic mirrors, and wherein the irradiation of the optical waveguide is orthogonal to the plane of propagation of the signal.
Dependencies are inferred from the claim text.