Photonic Systems Group

University of California, San Diego



The Photonic Systems Laboratory currently supports multiple research thrusts in signal processing, sensing, and communications. The group has developed a new class of parametric devices and used them to achieve records in terabit-scale signal processing, analog-to-digital signal conversion, and high-quality wide-band frequency combs. The core capability of the laboratory, nanometer-scale mixer synthesis, is enabled by a unique facility developed over a half-decade period. The new technology is currently used to construct new classes of agile oscillators and signal processors capable of establishing new records in signal speed, fidelity, and dissipation.


In the second thrust, the laboratory hosts research on communication and sensing in bandwidth constrained physical channels. This technology has led to record spectral efficiencies in optical and free-space links and is currently being developed in both optical and RF domains.



"Combing" Through Light May Give Us Faster, More Powerful Internet link

Engineers Just Broke the Capacity Limit For Fiber Optic Transmission link

Breaking the light barrier  link

An Advance May Double the Capabilities of Fiber Optics link

Frequency combs smooth out optical-fibre signals link

Engineers break power and distance barriers for fiber optic communication link

Photon Switch Called the Fastest of its Kind link

500 GHz photon switch is based on subnanometer-scale-engineered optical fiber link

Physicists build first 500 GHz photon switch link

Ultrafast Optics

Toward the control of light with light link

Easing the Fiber Capacity Crunch link

Researchers have broken the capacity limits of fiber optic networks link

Matched filtering of ultrashort pulses  link

New optical technique able to detect a single radio signal amongst background noise link

Noise can't hide weak signals from this new receiver link

Noise can't hide weak signals from this new receiver link