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Waveform Conversion and Wavelength Multicasting with Pulsewidth Tunability Using Raman Amplification Multiwavelength Pulse Compressor
Quynh NGUYEN QUANG NHU Quang NGUYEN-THE Hung NGUYEN TAN Motoharu MATSUURA Naoto KISHI
IEICE TRANSACTIONS on Electronics
Publication Date: 2015/08/01
Online ISSN: 1745-1353
Type of Manuscript: Special Section PAPER (Special Section on Microwave Photonics)
Category: Advanced Photonics
fiber optics and optical communication, optical signal processing, four-wave mixing, pulse compression, distributed Raman amplification,
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A combination of nonreturn-to-zero (NRZ)-to-return-to-zero (RZ) waveform conversion and wavelength multicasting with pulsewidth tunability is experimentally demonstrated. A NRZ data signal is injected into a highly nonlinear fiber (HNLF)-based four-wave mixing (FWM) switch with four RZ clocks compressed by a Raman amplification-based multiwavelength pulse compressor (RA-MPC). The NRZ signal is multicast and converted to RZ signals in a continuously wide pulsewidth tuning range between around 12.17 and 4.68 ps by changing the Raman pump power of the RA-MPC. Error-free operations of the converted RZ signals with different pulsewidths are achieved with negative power penalties compared with the back-to-back NRZ signal and the small variation among received powers of RZ output channels at a bit-error-rate (BER) of 10-9. The NRZ-to-RZ waveform conversion and wavelength multicasting without using the RA-MPC are also successfully implemented.