Optical fibre with quantum dots
AssigneeBritish Telecommunications public limited company
InventorMichael Graham Burt
Life of this patent
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Abstract
An optical fiber includes a tubular glass cladding with a central opening filled with a colloidal solution of quantum dots in a support medium. The quantum dots may be caused to produce luminescence in response to input optical radiation, for example to produce optical amplification or laser radiation. A waveguide with an active medium comprising colloidal quantum dots is provided.
Claims35
An optical fibre with a light guiding region characterised by a colloid of quantum dots in a non-solid host therein.
A waveguide that includes an optical active component that comprises a colloid of quantum dots in a non-solid host.
An optical fibre characterized by a colloid of quantum dots in a non-solid host therein.
An optical fibre amplifier comprising:
- an optical fibre having a light-guiding region including a bore, and a cladding region surrounding the light-guiding region, the bore containing a colloid of quantum dots in a liquid host;
- and
- an optical pump source optically coupled to the optical fibre to provide optical pump radiation to produce a population inversion in said quantum dots so as to provide optical gain.
An optical fibre amplifier comprising:
- an optical fibre having a longitudinally extending bore and a cladding region surrounding the bore, the bore containing a colloidal solution of quantum dots in an organic liquid, the quantum dots comprising a telluride material;
- an input port to receive optical signals to be amplified;
- an optical pump source optically coupled to the optical fibre to provide optical pump radiation to produce a population inversion in said quantum dots to provide optical gain;
- and
- an output port for the emission of said optical signals after amplification.
An optical fibre comprising:
- an elongated light-guiding cladding layer defining a light-guiding region therewithin;
- and
- said light-guiding region including a liquid colloid of quantum dots.
Dependencies are inferred from the claim text.