Title :
Dual-wavelength chaos generation and synchronization in erbium-doped fiber lasers
Author :
Zhang, Fan ; Chu, Pak L. ; Lai, R. ; Chen, G. Ron
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
fDate :
3/1/2005 12:00:00 AM
Abstract :
Dual-wavelength chaos is generated in one erbium-doped fiber laser. Tunable optical filters (TOF) are used to select the wavelengths. The generation of chaos is achieved by either modulating the pump laser diode near the relaxation oscillation frequency of the fiber laser or by introducing the modulation through an electrooptic modulator built into each wavelength branch. The receiver is fabricated with identical parameters as the transmitter except for an open loop structure. By tuning the TOF in the receiver, synchronization of chaos is observed in either of the two wavelengths. Thus, it can pave the way for wavelength-division-multiplexing chaos communications.
Keywords :
chaotic communication; electro-optical modulation; erbium; fibre lasers; laser tuning; optical chaos; optical fibre filters; optical pumping; optical receivers; optical transmitters; synchronisation; telecommunication security; wavelength division multiplexing; chaos communications; chaos generation; dual-wavelength chaos; electrooptic modulator; erbium-doped fiber laser; open loop structure; optical fabrication; optical modulation; pump laser diode; receiver; relaxation oscillation frequency; secure communications; synchronization; transmitter; tunable optical filters; wavelength-division-multiplexing; Chaos; Chaotic communication; Electrooptic modulators; Erbium-doped fiber lasers; Frequency synchronization; Laser tuning; Lasers and electrooptics; Optical filters; Pump lasers; Tunable circuits and devices; Chaos; erbium-doped fiber (EDF); fiber laser; secure communications; wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.842390
