Photonic Systems Group
University of California San Diego
REVEALING THE SIGNAL
We have demonstrated detection of a single optical event by combining signal cloning with frequency combs and signal-processing techniques. Our detector can detect signals buried within noise, that is undetectable with conventional detection schemes, thus directly enabling new advances in astronomy, secure communications and biology. The research is published in the December 11, 2015 issue of the journal Science.
CAPACITY LIMIT BROKEN
We have solved the long standing conundrum about the inability of reversing the Kerr-induced nonlinear cross-talk in fiber optic transmission, thereby breaking the key capacity barriers in optical fiber transmission. This advance has the potential to increase the data transmission rates for the fiber optic cables that serve as the backbone of the Internet, cable, wireless and landline networks. The research is published in the June 26, 2015 issue of the journal Science.
CONTROLLING LIGHT BY FEW PHOTONS
We have demonstrated ultrafast all-optical control of the watt-strong pump wave by three-photon signal by exploiting pump depletion in the dispersion engineered parametric fiber mixer. The result provides a path to developing energy-efficient signal processing and sensing devices for classical and quantum communication systems. The research is published in the June 19, 2014 issue of the journal Science.
Our mission is to inspire scientific innovations and reveal methods to solving critical problems in communications, medicine, astronomy and security. To accomplish our goals, we have designed photonic devices and systems capable of establishing new records in signal speed, fidelity, and dissipation. Our state-of-the-art devices exploit linear and nonlinear optical interactions in silica fiber and semiconductor materials and are currently implemented as signal processors, agile oscillators and frequency combs. A key to our success is a unique facility developed over a decade-long period, located on UC San Diego campus in La Jolla. To find out more about ongoing research and facilities, please visit the research page.
The Incredible Loudness of Whispering link
New optical technique able to detect a single radio signal amongst background noise link
Easing the Fiber Capacity Crunch link
Toward the control of light with light link
Matched filtering of ultrashort pulses link
Breaking the light barrier link
Engineers break power and distance barriers for fiber optic communication link
Photon Switch Called the Fastest of its Kind link
Noise can't hide weak signals from this new receiver link
An Advance May Double the Capabilities of Fiber Optics link
Engineers Just Broke the Capacity Limit For Fiber Optic Transmission link
500 GHz photon switch is based on subnanometer-scale-engineered optical fiber link
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