Broadband Ho-doped optical fiber amplifier
US11509110B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Apr 15, 2020 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Feb 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094096
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A broadband optical amplifier for operation in the 2 μm visible wavelength band is based upon a single-clad Ho-doped fiber amplifier (HDFA). A compact pump source uses a combination of discrete laser diode with a fiber laser (which may be a dual-stage fiber laser) to create a pump output beam at a wavelength associated with creating gain in the presence of Ho ions (an exemplary pump wavelength being 1940 nm). The broadband optical amplifier may take the form of a single stage amplifier or a multi-stage amplifier, and may utilize a co-propagating pump and/or a counter-propagating pump arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.