Regimes of operation states in passively mode-locked fiber soliton ring laser

Gong, Yandong; Shum, Ping; Tang, Dingyuan; Lu, Chao; Guo, Xin; Paulose, Varghese; Man, W. S.; Tam, Hwa Yaw

doi:10.1016/j.optlastec.2003.09.013

Cited by 32 publications

(7 citation statements)

References 32 publications

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“…It is well known that there are diverse operation modes for a passively mode-locked fiber laser based on nonlinear polarization revolution: single-pulse train, multipulse bunching, harmonic mode-locking, and so on [11].These operation modes can be switched from one to another just through changing polarization states.…”

Section: Resultsmentioning

confidence: 99%

Passive harmonically mode-locked erbium-doped fiber laser with scalable repetition rate up to 1.2 GHz

Zhang¹,

Zhan²,

Yang³

et al. 2007

Laser Phys. Lett.

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Passive harmonically mode-locked fiber ring laser with scalable repetition rate up to 1.2 GHz has been experimentally demonstrated. Two types of stabilization mechanisms for passive harmonic mode-locking are identified at different repetition rates. Through investigating the dynamics of pulse generation, it is found that a new operation mode, harmonic modelocking of multipulse bunching, favors higher order harmonic. The supermode suppression rates of harmonically mode-locked pulse trains at 439 MHz and 1.145 GHz are 40 dB and 30 dB, respectively.Output power, dBm -

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Section: Resultsmentioning

confidence: 99%

Passive harmonically mode-locked erbium-doped fiber laser with scalable repetition rate up to 1.2 GHz

Zhang¹,

Zhan²,

Yang³

et al. 2007

Laser Phys. Lett.

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“…It is a result of interaction between two slightly overlapped solitons inside the laser cavity which produces bound solitons with fixed and discrete separation. It is possible to obtain the state of bound solitons from some other configurations obtained by other authors [3,4,5]. The separations between bound solitons calculated from spectral modulation period was 7.…”

Section: Figure 6 Optical Spectra Of Pulses For Configuration Withoumentioning

confidence: 80%

Passively Mode-Locked Erbium Doped Laser with Combination of NPR and NALM Effects

Budnicki

Szpak

Maternia

et al. 2006

2006 International Conference on Transparent Optical Networks

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The nonlinear polarization rotation influence on the pulse duration in the " Figure 8" fiber laser configuration is presented. The broadening of the pulse spectrum was observed. Bound states of solitons with different pulse separation were obtained. Keywords : passive mode-locking, erbium doped fiber laser, bound solitons. INTRODUCTIONThe generation of ultrashort pulses has a large application in fiber telecommunication and fiber metrology. This area is developing quite fast during the last few years. Erbium doped fiber spectrum covers the third telecommunication window. Hence, these technique seems to be attractive source for ultrafast transmission systems, fiber sensing and metrology. Particularly the passive mode-locking technique enables the oscillation of ultrashort, subpicosecond pulses. The passive mode-locked fiber lasers can be distinguished by three main mechanisms: with saturable absorber, with nonlinear polarization rotation (NPR), with nonlinear optical/amplifying mirror (NOLM/NALM).Typical configurations of NPR laser is presented in Fig. 1a. The role of mode-locking element plays an optical polarizer inserted between two polarization controllers. One of them -PC1 changes the linear state of polarization into an elliptical one. As a result of nonlinearity the polarization state of the beam inside the laser ring cavity starts rotating. Second polarization controller PC2 should settle the state where central part of the pulse travels through the polarizer, when the wings of the pulse are blocked. As a result of that pulses become shorter. The main nonlinear effects responsible for NPR are self phase modulation (SFM) and cross phase modulation (XPM). This configuration allows to obtain shortest pulses, for EDF mode-locked lasers, it is about 70 fs [1].

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“…Depending on the cavity dispersion design, different kinds of pulses could be generated in fiber lasers. [11][12][13][14] In an anomalous-dispersion fiber laser, conventional soliton was usually formed by the balance between negative group-velocity dispersion (GVD) and self-phase modulation (SPM). [15] The conventional soliton was characterized by spectral sidebands and chirp-free time bandwidth product (TBP).…”

Section: Introductionmentioning

confidence: 99%

Generation of single and multiple dissipative soliton in an erbium-doped fiber laser

Duan¹,

Wen²,

Fan³

et al. 2017

Chinese Phys. B

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We experimentally report on the generation of single and multiple dissipative soliton via nonlinear polarization rotation technique. The spectrum of the mode-locked dissipative soliton exhibits typical steep edges with a flat top; the pulse duration is 10.07 ps. It is found that with the pump power increasing from 110 mW to 161 mW, the top of the mode-locked spectrum becomes flater and the 3-dB spectral bandwidth is broadened, which indicates that the gain-dispersion effect is lowered under stronger pump. However, the full bandwidth of the spectrum is narrowed, which proves that the spectral filter effect increases and overcomes the effect of self-phase modulation induced spectral broadening. Such a phenomenon was not noticed nor reported before. Our experiment also demonstrates that the pulse interval is highly dependent on the input pump power: with pump power increasing, the pulse interval tends towards more uniform. So our observation qualitatively analyzes the relationship between mode-locked pulse characteristics and input pump power.

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Regimes of operation states in passively mode-locked fiber soliton ring laser

Cited by 32 publications

References 32 publications

Passive harmonically mode-locked erbium-doped fiber laser with scalable repetition rate up to 1.2 GHz

Passive harmonically mode-locked erbium-doped fiber laser with scalable repetition rate up to 1.2 GHz

Passively Mode-Locked Erbium Doped Laser with Combination of NPR and NALM Effects

Generation of single and multiple dissipative soliton in an erbium-doped fiber laser

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