Title :
Bidirectional WDM-DPSK transmission by using SOAs
Author :
Errico, A.D. ; Proietti, R. ; Calabretta, N. ; Contestabile, G. ; Ciaramella, E.
Author_Institution :
CNIT, Scuola Superiore S. Anna, Pisa
Abstract :
We demonstrate the longest bidirectional and unrepeatered semiconductor optical amplifier (SOA)-based transmission of 16 differential phase-shift keying (DPSK), 100-GHz-spaced channels at 10 Gb/s over standard single-mode fiber. Key techniques are: the use of DPSK constant-envelope modulation format to prevent nonlinear distortions in the SOAs; a new type of wavelength-division-multiplexing-DSPK demodulator to strongly enhance the signal tolerance to chromatic dispersion. After 120-km transmission, 1.8- to 3-dB power penalty was found for the 16 channels
Keywords :
channel spacing; differential phase shift keying; optical communication equipment; optical fibre communication; optical fibre dispersion; optical modulation; semiconductor optical amplifiers; wavelength division multiplexing; 10 Gbit/s; 120 km; SOA; bidirectional WDM-DPSK; channel spacing; chromatic dispersion; differential phase-shift keying; semiconductor optical amplifier; wavelength-division-multiplexing; Demodulation; Differential quadrature phase shift keying; Fiber nonlinear optics; Optical amplifiers; Optical fiber polarization; Optical saturation; Phase modulation; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing; Optical communications; optical differential phase-shift keying (DPSK); semiconductor optical amplifiers (SOAs); wavelength-division-multiplexing (WDM) systems;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.880791
