Team manipulates soliton photonic waves on a silicon chip: Page 3 of 3

July 04, 2019 //By Jean-Pierre Joosting
Team manipulates soliton photonic waves on a silicon chip
A collaboration between the University of Sydney Nano Institute and Singapore University of Technology and Design has for the first time manipulated a light wave, or photonic information, on a silicon chip that retains its overall 'shape'.

They are called Bragg solitons after Australian-born Lawrence Bragg and his father William Henry Bragg, who first discussed the concept of Bragg reflection in 1913 and went on to win the Nobel Prize in Physics. They are the only father and son pair to have won Nobel Prizes.

Bragg solitons were first observed in 1996 in Bragg gratings in optical fibres. This was demonstrated by Professor Eggleton while he was working on his PhD at Bell Labs.
The silicon-based nature of the Bragg grating device also ensures compatibility with complementary metal oxide semiconductor (CMOS) processing. The ability to reliably initiate soliton compression and fission allows ultrafast phenomena to be generated with longer pulses than previously required. The chip-scale miniaturisation also advances the speed of optical signal processes in applications necessitating compactness.

This work has been published in Laser & Photonics Reviews: https://doi.org/10.1002/lpor.201900114.


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