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Experimental observations of separation-changeable soliton pairs in a fiber laser mode-locked by nonlinear polarization rotation technique

XIAOHUI LI1, XUEMING LIU1,* , XIAOHONG HU1, LEIRAN WANG1, YONGKANG GONG1, UA LU1, DONG MAO1

Affiliation

  1. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China

Abstract

The soliton pairs with changeable temporal separation in a passively mode-locked fiber laser are investigated experimentally. Temporal separations of pulses are as large as tens of nanoseconds, which are almost four orders of magnitudes larger than the pulse duration. The mechanism of the changeable separation mainly attributes to the variation of the linear phase delay in the cavity. Soliton pairs with large temporal separations and their variable characteristics are different from the operation of typical harmonic or bound state of solitons. These novel states in this report can be considered as the quasi-bound states..

Keywords

Mode-locked lasers, Sparation-changeable soliton pairs, Quasi-bound soliton states, Ultrashort pulses.

Submitted at: Feb. 21, 2011
Accepted at: March 16, 2011

Citation

XIAOHUI LI, XUEMING LIU, XIAOHONG HU, LEIRAN WANG, YONGKANG GONG, UA LU, DONG MAO, Experimental observations of separation-changeable soliton pairs in a fiber laser mode-locked by nonlinear polarization rotation technique, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 3, pp. 190-195 (2011)