System for generating low-jitter digital clock signals using pulsed laser
US11082032B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Feb 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/446
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low-jitter digital clock signal generating system which uses optical pulses output from a pulse laser includes a first balanced photodetector that converts first and second optical pulses with a delayed time interval into first and second electrical pulses through first and second photodiodes and outputs first and second modulated pulses generated by allowing the first and second electrical pulses to partially overlap each other, a second balanced photodetector that converts third and fourth optical pulses with the delayed time interval into third and fourth electrical pulses through third and fourth photodiodes, and outputs a second modulated pulse generated by allowing the third and fourth electrical pulses to partially overlap each other, and a capacitor. The capacitor is charged by the first modulated pulse, is discharged by the second modulated pulse, and outputs a voltage according to the charging and discharging as a clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.