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The influence of nonlinear polarization rotation of SOA on the output pulse of harmonic mode-locked fiber ring laser

GUANG-YU JIANG1,* , YAN HUANG1, YONG-QING GONG1

Affiliation

  1. College of Automation, Nanchang Hangkong University, Nanchang 330063, China

Abstract

Actively mode-locked fiber lasers based on the semiconductor optical amplifier(SOA),which are capable of generating ultra-short pulse train with high quality and high repetition rates,have received considerable attention.After considering the nonlinear polarization rotation in the SOA, a theoretical model of the harmonic mode-locked fiber ring laser based on SOA has been established. Using this model, for the different bias currents of the SOA, the influence of the nonlinear polarization rotation in the SOA on the shape, peak power, and pulse width of the pulse output from the harmonic mode-locked fiber ring laser has been investigated theoretically. Numerical results show that the mode-locked pulses whose peak power and pulse width are 0.16mW and 6ps for the low currents, 0.56mW and 19.8ps for the high currents respectively, can be obtained for the harmonic mode-locked fiber ring laser..

Keywords

Optical communication; Semiconductor optical amplifier(SOA); Nonlinear polarization rotation, Harmonic mode-locking.

Submitted at: March 3, 2008
Accepted at: Oct. 7, 2008

Citation

GUANG-YU JIANG, YAN HUANG, YONG-QING GONG, The influence of nonlinear polarization rotation of SOA on the output pulse of harmonic mode-locked fiber ring laser, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2522-2527 (2008)