Phys. Rev. Lett. 84, 3298–3301 (2000)Experimental Evidence of Coherence Resonance in an Optical SystemReceived 13 July 1999; published in the issue dated 10 April 2000 Experimental evidence of coherence resonance in an optical system is reported. We show that the regularity of the excitable pulses in the intensity of a laser diode with optical feedback increases when adding noise, up to an optimal value of the noise strength. Both phase and amplitude fluctuations of the pulses play a relevant role in the dynamics of the system. We introduce the joint entropy of the two variables to generalize the indicator of coherence, and we put in evidence the mechanism of destruction of the excitable orbit after the resonance. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.3298
DOI:
10.1103/PhysRevLett.84.3298
PACS:
42.65.Sf, 05.40.Ca, 42.55.-f
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.