Title :
Optical Heterodyne Generation of High-Dimensional and Broadband White Chaos
Author :
Anbang Wang ; Bingjie Wang ; Lei Li ; Yuncai Wang ; Shore, K. Alan
Author_Institution :
Key Lab. of Adv. Transducers & Intell. Control Syst., Taiyuan Univ. of Technol., Taiyuan, China
Abstract :
White chaos with a colorless spectral bandwidth of 14 GHz contained within a range of 3 dB is experimentally generated by optical heterodyning of two external-cavity laser diodes. Experimental and numerical results show that the signatures of laser relaxation oscillation and external-cavity resonance (i.e., time delay signature), which are intrinsic to the laser dynamics are totally eliminated in the heterodyne-generated chaos. Correlation dimensional analysis shows that the generated chaos has a high dimensionality, being greater than 10. In addition, the effects on the heterodyne spectral bandwidth of variations in the optical feedback strength and frequency detuning of the lasers are studied experimentally and theoretically. Opportunities are identified for the deployment of white chaos.
Keywords :
heterodyne detection; laser cavity resonators; laser feedback; laser tuning; optical chaos; semiconductor lasers; bandwidth 14 GHz; broadband white chaos; correlation dimensional analysis; external-cavity laser diodes; external-cavity resonance; frequency detuning; heterodyne spectral bandwidth; high-dimensional white chaos; laser dynamics; laser relaxation oscillation; optical feedback strength; optical heterodyne generation; Bandwidth; Chaos; Correlation; Laser feedback; Optical feedback; Optical mixing; Oscillators; Chaos; Heterodyning; Optical feedback; Semiconductor lasers; White noise; heterodyning; optical feedback; semiconductor lasers; white noise;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2015.2427253
