Solitary and coupled semiconductor ring lasers as optical spiking neurons

by Coomans, W., Gelens, L., Beri, S., Danckaert, J. and Van der Sande, G.
Abstract:
We theoretically investigate the possibility of generating pulses in an excitable (asymmetric) semiconductor ring laser (SRL) using optical trigger pulses. We show that the phase difference between the injected field and the electric field inside the SRL determines the direction of the perturbation in phase space. Due to the folded shape of the excitability threshold, this has an important influence on the ability to cross it. A mechanism for exciting multiple consecutive pulses using a single trigger pulse (i.e., multipulse excitability) is revealed. We furthermore investigate the possibility of using asymmetric SRLs in a coupled configuration, which is a first step toward an all-optical neural network using SRLs as building blocks.
Reference:
Solitary and coupled semiconductor ring lasers as optical spiking neurons Coomans, W., Gelens, L., Beri, S., Danckaert, J. and Van der Sande, G., Physical Review E, volume 84, pp. 036209, 2011.
Bibtex Entry:
@article{coomans_solitary_2011,
	title = {Solitary and coupled semiconductor ring lasers as optical spiking neurons},
	volume = {84},
	url = {http://link.aps.org/doi/10.1103/PhysRevE.84.036209},
	doi = {10.1103/PhysRevE.84.036209},
	abstract = {We theoretically investigate the possibility of generating pulses in an excitable (asymmetric) semiconductor ring laser (SRL) using optical trigger pulses. We show that the phase difference between the injected field and the electric field inside the SRL determines the direction of the perturbation in phase space. Due to the folded shape of the excitability threshold, this has an important influence on the ability to cross it. A mechanism for exciting multiple consecutive pulses using a single trigger pulse (i.e., multipulse excitability) is revealed. We furthermore investigate the possibility of using asymmetric SRLs in a coupled configuration, which is a first step toward an all-optical neural network using SRLs as building blocks.},
	number = {3},
	urldate = {2016-11-07},
	journal = {Physical Review E},
	author = {Coomans, W. and Gelens, L. and Beri, S. and Danckaert, J. and Van der Sande, G.},
	month = sep,
	year = {2011},
	pages = {036209},
	file = {APS Snapshot:/home/jan/.zotero/zotero/djuw86a6.default/zotero/storage/DM7HZMMZ/PhysRevE.84.html:text/html}
}