40 GHz pulse generation using a widely tunable all-polarisation preserving erbium fibre ring laser

Pfeiffer, Th.; Veith, G.

doi:10.1049/el:19931231

Cited by 99 publications

(17 citation statements)

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“…This method has been widely adopted in e.g. telecommunication systems and wavelength tunable lasers at 40 GHz repetition rate have been demonstrated [3]. However these lasers are generally limited by the bandwidth of the underlying electronic system and in order to to increase the repetition rate beyond 100 GHz new all optical techniques have to be adopted.…”

Section: Introductionmentioning

confidence: 99%

Wavelength and repetition rate tunable mode-locked laser at up to 640 GHz using reconfigurable wavelength selective switch

Schröder

Eggleton

2009

2009 14th OptoElectronics and Communications Conference

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Section: Introductionmentioning

confidence: 99%

Wavelength and repetition rate tunable mode-locked laser at up to 640 GHz using reconfigurable wavelength selective switch

Schröder

Eggleton

2009

2009 14th OptoElectronics and Communications Conference

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“…Due to the electronic and bandwidth limitation on the modulator frequency, it is very difficult to reach the repetition rate higher than 40 GHz. 2 The rational harmonic mode locking mechanism helps overcome this bottleneck by the frequency multiplication effects. 3,4 Namely, if the modulation frequency is detuned from the mode intervals equal to ͑k +1/q͒⍀ int , where k and q are integers and ⍀ int is the frequency interval of the cavity modes, the optical pulse repetition rate will be much faster than the modulation speed reaching to ͑k ϫ q +1͒⍀ int .…”

Section: Introductionmentioning

confidence: 99%

Classical coupled oscillators model of the rational harmonic mode locked laser

Chen

2006

Journal of Applied Physics

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A coupled modes method is proposed to simulate the active mode locked laser. In this method, the electric fields of optical modes in the laser cavity are treated as free classical oscillators. The optical modulator provides the coupling among them. It is found that the eigenvalue of this coupled system is corresponding to the threshold optical gain, and the eigenfunction is corresponding to the optical field of each mode. The simulation results agree with the Master equation and experiments. Especially the model can be applied to the rational harmonic mode locking case by introducing the concept of ghost modes. The multitrip photons form a set of ghost modes or very weak oscillators. These ghost oscillators play the crucial rule working as the bridge to transfer energy and couple the real cavity modes/oscillators together. The model demonstrates both time domain pulse repetition rate multiplication and the frequency domain mode distribution. The proposed method will help understand the physics of rational harmonic mode locking mechanism and assist the design of devices such as optical pulse generator and multiwavelength laser. Therefore it should have great application in the optical signal generation and processing.

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“…Unfortunately, these modulators are highly sensitive to the polarization state of the input optical field. For this reason, laser sources using lithium niobate modulators have to be build from polarization preserving fiber pigtailed components [6], [7] or else suffer from mode -locking loss which limits their operational usability. Similarly, the use of lightly or moderately doped Er fiber results in long cavities which make fiber lasers sensitive to small environmental perturbations, such as thermal fluctuations and acoustic vibration.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of a High Repetition Rate Fiber Laser, Mode — Locked by External Optical Modulation of a Semiconductor Optical Amplifier

Zoiros

Stathopoulos

Vlachos

et al. 2001

IFIP Advances in Information and Communication Technology

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A theoretical study of a high repetition rate laser source based on a novel modelocking technique is presented. This technique relies on the fast saturation and recovery of a semiconductor optical amplifier induced by an external optical pulse and has been used to obtain 4.3 ps pulses at 20 GHz. A numerical model of the fiber ring laser has been developed describing the mode -locking process in the laser oscillator and providing solutions for the steady -state mode -locked pulse profile. The critical parameters of the system are defined and analyzed and their impact on the formation of the mode -locked pulses is examined. The comparison between the theoretical results and the experimental data reveals very good agreement and has allowed the optimization of the performance of the system in terms of these parameters.

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40 GHz pulse generation using a widely tunable all-polarisation preserving erbium fibre ring laser

Cited by 99 publications

References 0 publications

Wavelength and repetition rate tunable mode-locked laser at up to 640 GHz using reconfigurable wavelength selective switch

Wavelength and repetition rate tunable mode-locked laser at up to 640 GHz using reconfigurable wavelength selective switch

Classical coupled oscillators model of the rational harmonic mode locked laser

Numerical Modeling of a High Repetition Rate Fiber Laser, Mode — Locked by External Optical Modulation of a Semiconductor Optical Amplifier

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