OPTICALLY PUMPABLE WAVEGUIDE AMPLIFIER WITH AMPLIFIER HAVING TAPERED INPUT AND OUTPUT

摘要

Optically pumpable waveguide amplifier with amplifier having tapered input and output. The present invention provides for a optically pumpable waveguide amplification device that includes: a cladding material; a passive optical waveguide embedded in the cladding material that has no optical amplification functionality; and an active optical waveguide having an input portion, a middle portion and an output portion, including: a gain material with a higher refractive index than the passive optical waveguide, wherein the middle portion of the active optical waveguide is embedded in the cladding material, and faces the passive wave guide, such that a lower surface of the middle portion is an upper surface of the passive optical waveguide. There is also provided a device for optically pumpable waveguide amplification and a method for signal radiation amplification.

主权项

1. An optically pumpable waveguide amplifier device, comprising:
a cladding material; a passive optical waveguide embedded in the cladding material that has no optical amplification functionality; and an active optical waveguide having a gain material with a higher refractive index than the passive optical waveguide, and which successively includes: an input portion, a middle portion, an output portion, wherein the middle portion successively include: a first taper portion, an amplifier portion, and a second taper portion; the middle portion embedded in the cladding material, and facing the passive waveguide, such that a lower surface of the middle portion is an upper surface of the passive optical waveguide; and each of the taper portions widens towards the amplifier portion, parallel to the lower surface, such that a narrow end of each of the taper portions have a cross-sectional area that is smaller than a cross-sectional area of the passive optical waveguide at the same level of narrow end.