US Patent Application 18186125. Electronic Devices with Low Phase Noise Frequency Generation simplified abstract
Contents
Electronic Devices with Low Phase Noise Frequency Generation
Organization Name
Inventor(s)
Bertram R. Gunzelmann of Koenigsbrunn (DE)
Nedim Muharemovic of Nuremberg (DE)
Ramin Khayatzadeh of Munich (DE)
Tomas Sarmiento of Mountain View CA (US)
Electronic Devices with Low Phase Noise Frequency Generation - A simplified explanation of the abstract
This abstract first appeared for US patent application 18186125 titled 'Electronic Devices with Low Phase Noise Frequency Generation
Simplified Explanation
The patent application describes an electronic device with clocking circuitry that uses lasers to generate optical local oscillator (LO) signals.
- The device includes primary and secondary lasers that generate first and second optical LO signals.
- A phase-locked loop (PLL) is used to tune the secondary laser to phase lock the first and second optical LO signals.
- A self-injection locking loop path is used to minimize phase noise and jitter of the optical LO signals.
- The self-injection locking loop path includes a first mixer and a second mixer.
- The first mixer generates a beat signal using the first and second optical LO signals.
- The second mixer generates a self-injection locking signal based on the first optical LO signal and the beat signal.
- A delay line or optical resonator is used to iteratively self-inject the self-injection locking signal onto the secondary laser.
Original Abstract Submitted
An electronic device may include clocking circuitry with primary and secondary lasers that generate first and second optical local oscillator (LO) signals. A phase-locked loop (PLL) may tune the secondary laser based to phase lock the first and second optical LO signals. A self-injection locking loop path may couple an output of the secondary laser to its input. The self-injection locking loop path may include a first mixer and a second mixer. The first mixer may generate a beat signal using the first and second optical LO signals. The second mixer may generate a self-injection locking signal based on the first optical LO signal and the beat signal. A delay line or optical resonator may iteratively self-inject the self-injection locking signal onto the secondary laser. This may serve to minimize phase noise and jitter of the optical LO signals.
