English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Paper

Optical memories and switching dynamics of counterpropagating light states in microresonators

MPS-Authors
/persons/resource/persons60454

Del'Haye,  Pascal
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
National Physical Laboratory;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

2002.02954.pdf
(Preprint), 3MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Del Bino, L., Moroney, N., & Del'Haye, P. (submitted). Optical memories and switching dynamics of counterpropagating light states in microresonators.


Cite as: https://hdl.handle.net/21.11116/0000-0006-6088-4
Abstract
The Kerr nonlinearity can be a key enabler for many digital photonic circuits as it allows access to bistable states needed for all-optical memories and switches. A common technique is to use the Kerr shift to control the resonance frequency of a resonator and use it as a bistable, optically-tunable filter. However, this approach works only in a narrow power and frequency range or requires the use of an auxiliary laser. An alternative approach is to use the asymmetric bistability between counterpropagating light states resulting from the interplay between self- and cross-phase modulation, which allows light to enter a ring resonator in just one direction. Logical HIGH and LOW states can be represented and stored as the direction of circulation of light, and controlled by modulating the input power. Here we study the switching speed, operating laser frequency and power range, and contrast ratio of such a device. We reach a bitrate of 2 Mbps in our proof-of-principle device over an optical frequency range of 1 GHz and an operating power range covering more than one order of magnitude. We also calculate that integrated photonic circuits could exhibit bitrates of the order of Gbps, paving the way for the realization of robust and simple all-optical memories, switches, routers and logic gates that can operate at a single laser frequency with no additional electrical power.