Title :
All-Optical Wavelength Conversion of a Chaos Masked Signal
Author :
Annovazzi-Lodi, Valerio ; Aromataris, Giuseppe ; Benedetti, Mauro ; Cristiani, Ilaria ; Merlo, Sabina ; Minzioni, Paolo
Author_Institution :
Univ. di Pavia, Pavia
Abstract :
Wavelength conversion in the transmission of a message masked by optical chaos is experimentally demonstrated. In our setup, chaos is generated by a distributed-feedback laser subject to delayed optical feedback, and hides a message by additive chaos masking. The optical wavelength is converted, along the transmission line, by four-wave mixing in a semiconductor optical amplifier. At the receiver, the message is extracted by master-slave synchronization. Our experiments demonstrate that secure communications based on chaos are compatible with channel switching as required in reconfigurable optical networks.
Keywords :
distributed feedback lasers; multiwave mixing; optical chaos; optical wavelength conversion; semiconductor optical amplifiers; all optical wavelength conversion; channel switching; chaos masked signal; delayed optical feedback; distributed feedback laser; four wave mixing; master-slave synchronization; message masked transmission; optical chaos; reconfigurable optical networks; semiconductor optical amplifier; transmission line; Chaos; Chaotic communication; Distributed feedback devices; Laser feedback; Nonlinear optics; Optical feedback; Optical mixing; Optical receivers; Optical wavelength conversion; Stimulated emission; Chaos; cryptography; frequency conversion; optical fiber communication; optical signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.906847
