Title :
All-Optical Packet-Level Wavelength Swapping of PSK and ASK Signals in PPLN Waveguide
Author :
Berrettini, G. ; Malacarne, Antonio ; Lazzeri, E. ; Meloni, Gianluca ; Bogoni, Antonella
Author_Institution :
Scuola Superiore Sant´Anna, Pisa, Italy
Abstract :
An all-optical solution performing wavelength swapping of signals with different modulation formats is presented. The signal swapping is obtained by cascading sum frequency generation and difference frequency generation second-order nonlinearities in periodically-poled Lithium Niobate waveguide. Data swapping of 40-Gb/s differential quadrature phase shift keying (DQPSK) and 10-Gb/s on-off keying (OOK) signals is achieved. The effectiveness of the scheme is demonstrated by means of exhaustive bit-error rate (BER) measurements at the packet level. The presented scheme is potentially polarization and wavelength independent.
Keywords :
amplitude shift keying; differential phase shift keying; error statistics; light polarisation; lithium compounds; optical frequency conversion; optical modulation; optical waveguides; quadrature phase shift keying; ASK signals; BER measurement; DQPSK signal; LiNbO3; OOK signals; PPLN waveguide; all-optical packet-level wavelength swapping; all-optical solution performing wavelength swapping; bit rate 10 Gbit/s; bit rate 40 Gbit/s; bit-error rate measurements; data swapping; difference frequency generation second-order nonlinearity; differential quadrature phase shift keying signals; modulation formats; on-off keying signals; periodically-poled lithium niobate waveguide; polarization independent scheme; signal swapping; sum frequency generation; wavelength independent scheme; Optical waveguides; nonlinear optical devices; optical signal processing; optical wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2263377
