High Repetition-Rate Similariton Generation in Normal Dispersion Erbium-Doped Fiber Amplifiers and Its Application to Multi-Wavelength Light Sources

Yasuyuki OZEKI  Yuichi TAKUSHIMA  Keiichi AISO  Kazuro KIKUCHI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E88-C   No.5   pp.904-911
Publication Date: 2005/05/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.5.904
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)
Category: Optical Fibers, Cables and Fiber Devices
Keyword: 
optical fiber amplifier,  self-phase modulation,  similariton,  spectrum broadening,  

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Summary: 
We design and demonstrate a high repetition-rate similariton generation system using normal dispersion fiber amplifiers (NDFA's). We numerically calculate the pulse evolution in NDFA's and clarify the condition to generate similariton pulses in a finite-length NDFA. Then we design the similariton generation system in consideration of the use of Erbium-doped fibers (EDF's) and show that a km-long fiber amplifier with low normal dispersion can generate a high repetition-rate similariton train from practical pico-second pulse sources. In the experiment, we demonstrate a 10-GHz similariton source using a 1.2-km-long EDF. For application to multi-wavelength light sources, we measure the bit-error rate of the spectrally sliced similariton, and show that it exhibits low-noise performance, which is attributed to the spectral flatness.