Abstract

A passively mode-locked soliton fiber ring laser with dispersion managed cavity is reported. The laser emits intense bunched noise-like pulses including the transform limited pulses. The optical spectrum of the laser emission has a bandwidth as broad as 32.10 nm. It was found that purely depending on the linear cavity phase delay the laser could be switched between the soliton operation and the noise-like pulse emission. Numerical simulations showed that the laser emission was caused by the combined effect of soliton collapse and positive cavity feedback in the laser.

© 2005 Optical Society of America

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References

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Appl. Phys. Lett.

Masataka Nakazawa, Eiji Yoshida, and Yasuo Kimura, �??Low threshold, 290 fs erbium-doped fiber laser with a nonlinear amplifying loop mirror pumped by InGaAsP laser diodes,�?? Appl. Phys. Lett. 59, 2073-2075 (1991).
[CrossRef]

Electron. Lett.

D. J. Richardson, R. I. Laming, D. N. Payne, M. W. Phillips, and V. J. Matsas, �??320 fs soliton generation with passively mode-locked erbium fibre laser,�?? Electron. Lett. 27, 730-732 (1991).
[CrossRef]

K. Tamura, H. A. Haus and E. P. Ippen, �??Self-starting additive pulse mode-locked erbium fiber ring laser,�?? Electron. Lett. 28, 2226-2228 (1992).
[CrossRef]

A. B. Grudinin, D. J. Richardson and D. N. Payne, �??Energy quantization in figure eight fiber laser,�?? Electron. Lett. 28, 67-68 (1992).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Phys. Rev. A

D. Y. Tang, B. Zhao, D. Y. Shen, C. Lu, W. S. Man and H. Y. Tam, �??Compound pulse solitons in a fiber ring laser,�?? Phys. Rev. A. 68, 013816 (2003).
[CrossRef]

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Figures (3)

Fig. 1.
Fig. 1.

Schematic of the fiber soliton laser setup. λ/4 : quarter-wave plate; λ/2 : half-wave plate; BS: beam splitter; WDM: wavelength-division multiplexer.

Fig. 2.
Fig. 2.

A typical state of the bunched noise-like pulse emission. (a) Optical spectrum of the state; (b) Autocorrelation trace with a scan span of 5 ps; (c) Autocorrelation trace with a scan span of 0.5 ps.

Fig. 3.
Fig. 3.

A typical bunched noise-like pulse state numerically calculated. (a) Time evolution of the noise-like pulses; (b) Autocorrelation trace numerical calculated.

Equations (2)

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{ u z = i β u δ u t ik " 2 2 u t 2 + ik " ' 6 3 u t 3 + i γ ( u 2 + 2 3 v 2 ) u + i γ 3 v 2 u * + g 2 u + g 2 Ω g 2 u t 2 v z = i β v + δ v t ik " 2 2 v t 2 + ik " ' 6 3 v t 3 + i γ ( v 2 + 2 3 u 2 ) v + i γ 3 u 2 v * + g 2 v + g 2 Ω g 2 v t 2
g = g 0 exp [ ( u 2 + v 2 ) dt P sat ]

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