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US 8,917,444 B2Granted
Chip-based frequency comb generator with microwave repetition rate
AssigneeCalifornia Institute of Technology
InventorsJiang Li, Hansuek Lee, Tong Chen, Kerry Vahala
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Abstract
A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.
Claims6
A chip-based frequency comb generator comprising:
- a chip-based disk resonator comprising a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer, the disk resonator having a low threshold microwave to millimeter wave repetition rate control, with repetition rates ranging from 2.6 GHz for a disk resonator having a diameter of 25 mm to 220 GHz for a disk resonator having a diameter of 0.3 mm.
Dependencies are inferred from the claim text.