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All-Optical Regeneration by Electro-Absorption Modulator
Kohsuke NISHIMURA Ryo INOHARA Masashi USAMI Shigeyuki AKIBA
IEICE TRANSACTIONS on Electronics
Publication Date: 2005/03/01
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Optical Signal-Processing Devices for Photonic Networks)
all-optical wavelength conversion, optical 3R regeneration, optical 2R regeneration, electro-absorption modulator,
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Optical regeneration technique using an electro-absorption modulator (EAM) is reviewed. Simple 3R optical regeneration using an EAM was proposed and verified at 20 Gbit/s. The optical nonlinearities including cross-absorption modulation (XAM) and cross-phase modulation (XPM) induced in an EAM were quantitatively characterized by experiment. High bit-rate 2R type all-optical regeneration (wavelength conversion) at 100 Gbit/s was demonstrated by an EAM in conjunction with a delayed interferometer (DI) with required optical pulse energy of 1.5 pJ. It was verified that the operable bandwidth of the EAM-DI wavelength converter at 40 Gbit/s covered almost full range of C-band without tuning operation conditions.