2021-03-09T09:04:14Z
https://digital.csic.es/dspace-oai/request
oai:digital.csic.es:10261/173715
2019-01-04T01:55:17Z
com_10261_2855
com_10261_4
col_10261_2864
00925njm 22002777a 4500
dc
Brunner, Daniel
author
Jacquot, Maxime
author
Larger, Laurent
author
Fischer, Ingo
author
2017
Networks of photonic elements are a key enabling technology for the realization of multiple next generation photonic systems. Phased beam arrays, coherent beam combining or neuromorphic computing in photonic networks: all these high-impact applications fundamentally require coupling between a large number of photonic components. Recently, a small network of ~20 semiconductor lasers based on coupling via a holographic element was reported [1]. However, the demonstration of large-scale complex photonic networks is lacking.Here, we demonstrate the scalability of holographic coupling, creating a large scale complex network of 1600 opto-electronic oscillators. The network's nonlinear nodes are implemented using a spatial light modulator (SLM) operated in intensity modulation mode. Imaging the SLM-surface through a polarizing beam splitter (PBS) onto a camera and closing the loop between camera and the SLM, we realize a nonlinear iterative map. The state of SLM pixel n is then given by I n (t + 1) = sin 2 (κI n (t) + φ 0 ). Here, I n (t)is the nth pixel intensity at time t, κ the feedback gain and φ 0 a constant phase offset. This equation corresponds to a simplified version of the Ikeda map. Figure 1 (a) schematically illustrates the experimental implementation. An exemplary bifurcation diagram for node (23, 8) is shown in Fig. 1 (b). The route to chaos shown in Fig. 1(b) exhibits the period-doubling behaviour expected from such an Ikeda system.
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) (2017)
978-1-5090-6736-7
http://hdl.handle.net/10261/173715
10.1109/CLEOE-EQEC.2017.8086462
Photonics
Couplings
Laser beams
Complex networks
Oscillators
Reservoirs
Chaos
A complex network of 1600 holographically coupled opto-electronic oscillators: Network dynamics and utilisation for reservoir computing