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Alternate-Phase RZ Pulse Sequence Generation Using a Rational Harmonic Mode-Locked Fiber Ring Laser
Yun Jong KIM Hyun-Jeong JO Young Yun CHUN Chang-Soo PARK
IEICE TRANSACTIONS on Communications
Publication Date: 2005/05/01
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)
Category: Transmission Systems and Technologies
optical communications, pulses, pulse propagation and solitons, mode-locked lasers, semiconductor optical amplifiers,
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We present and demonstrate a novel method of generating a π phase-alternated return-to-zero (RZ) signal together with pulse-amplitude equalization in a rational harmonic mode-locked fiber ring laser, by using a dual-drive Mach-Zehnder modulator. By adjusting the voltages applied to both arms of the modulator, amplitude-equalization and π phase shift can be achieved successfully at a 9.95 GHz repetition rate. The generated alternate-phase RZ signals show enhanced transmission performance in the single-mode fiber (SMF) links without dispersion compensation.