Cavity-enhanced frequency mixer for classical and quantum applications
US11762262B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cavity-enhanced frequency mixer includes an input optical fiber, a waveguide, and an output optical fiber. The waveguide has an input end and an output end, the input end is connected to the input optical fiber, and a surface of the input end of the waveguide is coated with a highly reflective coating. The output optical fiber is formed with a fiber Bragg grating structure. The highly reflective coating and the fiber Bragg grating structure form a pair of reflective surfaces for resonant optical parametric oscillation under a low threshold situation, so that one of the beams generated by the input beam is reflected inside the partially reflective surfaces. Operated above a pump power threshold, the cavity-enhanced frequency mixer is tantamount to a compact, low-power budget optical parametric oscillator, while below the pump power threshold, it is a bright, compact, single-mode and narrow linewidth single-photon source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.