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US 11,880,062 B2Granted
Microheater comprising a rare earth-doped optical fiber
AssigneesThe Board of Trustees of the University of Illinois, Clemson University
InventorsPeter Dragic, John Ballato, Andrey Mironov, Courtney Kucera, Matthew Tuggle
Life of this patent
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Abstract
A microheater comprises an optical fiber including a rare earth-doped glass core surrounded by a glass cladding. The rare earth-doped glass core comprises a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light at an absorption band wavelength, at least about 90% of absorbed pump light is converted into heat.
Claims18
A microheater comprising:
- an optical fiber comprising a rare earth-doped glass core radially surrounded by a glass cladding, the rare earth-doped glass core comprising a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light transmitted through an input end of the optical fiber at an absorption band wavelength, at least 95% of absorbed pump light is converted into heat,
- wherein the concentration of the rare earth dopant is at least 10 wt. %.
An optical modulator comprising:
- a microheater comprising:
- an optical fiber comprising a rare earth-doped glass core radially surrounded by a glass cladding, the rare earth-doped glass core comprising a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light at an absorption band wavelength, at least about 90% of absorbed pump light is converted into heat.
Dependencies are inferred from the claim text.