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Details of Grant 

EPSRC Reference: GR/K23768/01
Title: CONTROL AND SYNCHRONISATION OF CHAOS IN NONLINEAR OPTICAL SYSTEMS
Principal Investigator: Harrison, Professor RG
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Physics
Organisation: Heriot-Watt University
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 1994 Ends: 30 September 1997 Value (£): 113,809
EPSRC Research Topic Classifications:
Optical Phenomena
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
Radically new developments in the field of nonlinear dynamics have recently established that small adaptive perturbations may be used to control chaotic behaviour. This development is profound for the further new insight it may provide into dynamical systems behaviour and for the wealth of strategic dividends it offers. Diode lasers and fibre systems are the focus of our proposed investigations, for both their rich and quantifiable dynamics and deterministic chaos and their critical role in optical device driven technology. Our strategy is to first investigate control and tracking of chaos in single mode diode lasers with external feedback and SBS in single mode fibre resonators. They are representative of (1+0) and (1+1) dynamical systems respectively, and the workhorse for our programme. Our investigations will progress to interrogate the more complex issues of control, tracking and synchronisation of chaos in separately addressable multi-element diode lasers and (coupled) diode laser arrays, the latter is an example of (1+2) dynamical systems. From an application standpoint this programme is to resolve, by these control methods, current problems of dynamical destabilisation of these devices and from this to take advantage of such procedures in opening up new dimensions of their operation eg Giant coherent laser arrays, dc and tunable oscillatory devices etc.
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Organisation Website: http://www.hw.ac.uk