Title :
Experimental Demonstration of RZ-8-APSK Generation Through Optical Amplitude and Phase Multiplexing
Author :
Lu, Guo-Wei ; Miyazaki, Tetsuya
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol. (NICT), Koganei
Abstract :
In this letter, we propose and experimentally demonstrate an optical amplitude and phase multiplexing scheme to generate a multilevel modulation format signal, return-to-zero eight-amplitude and phase-shifted keying (RZ-8-APSK). The proposed optical amplitude and phase multiplexing is mainly based on four-wave mixing (FWM) in highly nonlinear fiber. Cross-absorption modulation in an electroabsorption modulator is employed to intentionally adjust the extinction ratio of the generated RZ-8-APSK signal. Amplitude and phase information carried in the inputs is multiplexed and transparently transferred to the generated FWM components. In the experiment, 30-Gb/s RZ-8-APSK signals are generated from input 10-Gb/s on-off keying and 20-Gb/s RZ differential quadrature phase-shifted keying in an all-optical manner.
Keywords :
differential phase shift keying; multiplexing; multiwave mixing; optical fibre communication; optical modulation; quadrature phase shift keying; RZ-8-APSK generation; bit rate 10 Gbit/s; bit rate 20 Gbit/s; bit rate 30 Gbit/s; four wave mixing; multilevel modulation format signal; optical amplitude multiplexing; optical phase multiplexing; return-to-zero differential quadrature phase-shifted keying; return-to-zero eight-amplitude phase-shifted keying; Electroabsorption modulator (EAM); multilevel modulation format; nonlinear fiber; optical fiber communication; optical modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2006000
