June 04, 2017

Silicon photonics enabled hyper-wideband wireless communication link

  • Chang C.
  • Chen Y.
  • Chimot N.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Itoh T.
  • Kaneda N.
  • Kim K.
  • Lelarge F.
  • Sinsky J.
  • Wu M.

We demonstrate the first silicon photonics enabled hyper-wideband wireless link with an instantaneous bandwidth of 12 GHz, which is 85% of the center frequency of 14 GHz. The silicon photonics based RF receiver consists of a four-channel optical phase encoder, an integrated hybrid-silicon mode-locked laser, and two silicon ring notch filters. The received CDMA RF wireless signal is correlated to baseband using coherent optical heterodyne at a data rate of 3 Gbps error-free with electronics bandwidth of only 3 GHz. Hyper-wideband RF transmission allows for data obfuscation and increased jamming resistance from narrowband interferers. The narrowband silicon photonic ring filters allow for further interference rejection of greater than 27 dB tunable over the full 20 GHz of RF spectrum.

View Original Article

Recent Publications

August 01, 2019

Protecting photonic quantum states using topology

  • Blanco-Redondo A.

The use of topology to protect quantum information is well-known to the condensed-matter community and, indeed, topological quantum computing is a bursting field of research and one of the competing avenues to demonstrate that quantum computers can complete certain problems that classical computers cannot. In photonics, however, we are only ...

May 01, 2019

Digital networks at the nexus of productivity growth

  • Kamat S.
  • Prakash S.
  • Saniee I.
  • Weldon M.

This paper takes a fresh look at the debate over the relationship between digital technology and productivity. The argument of economic historian Robert J. Gordon is that digital technology will not lead to increases in productivity such as we saw in the last century, based on his analysis of the ...

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...