Super Gaussian pulse generation in a passively mode-locked fiber laser

Karar, Abdullah S.

doi:10.1016/j.ijleo.2019.163072

Cited by 3 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The schematic diagram of the proposed fiber laser design is shown in Figure 2. The laser cavity, without the phase-only optical pulse shaper, used in this investigation, follows the work in [4,24] with the parameters chosen for parabolic pulse generation [25]. In this study, we model an erbium (Er) doped fiber laser in ring cavity configuration.…”

Section: Principle Of Operationmentioning

confidence: 99%

“…The majority of the cavity is formed by the SMF with a normal group velocity dispersion (GVD). Amplification is provided by the EDFA, while the DCF provides negative dispersion [4,17]. Propagation within the EDFA, DCF and SMF sections is modeled by the complex Ginzburg-Landau equation (CGLE) [26]:…”

Section: Basic Laser Cavitymentioning

confidence: 99%

“…Ever since, there has been continued interest in the control and synthesis of optical pulses through programmable means enabling the generation of nearly arbitrary user defined complex waveforms. Recently, numerical modeling of passively mode-locked fiber lasers showed the generation of super Gaussian intensity profiles by changing the intensity discriminating mechanism inside the laser cavity from a saturable absorber (SA) to a long period fiber grating (LPFG) [4]. Although the work in [4] demonstrated the ability to change the pulse shapes from self-similar parabolic pulses to super Gaussian pulses, it offered no programmability.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, numerical modeling of passively mode-locked fiber lasers showed the generation of super Gaussian intensity profiles by changing the intensity discriminating mechanism inside the laser cavity from a saturable absorber (SA) to a long period fiber grating (LPFG) [4]. Although the work in [4] demonstrated the ability to change the pulse shapes from self-similar parabolic pulses to super Gaussian pulses, it offered no programmability. In [5], a programmable, mode-locked fiber laser was demonstrated through introducing a digital micromirror device (DMD)-based arbitrary spectrum amplitude shaper inside the cavity of the laser.…”

Section: Introductionmentioning

confidence: 99%

“…This frequency domain approach has been revolutionized through line-by-line pulse shaping, in which spectral comb lines resulting from a mode-locked laser are resolved and manipulated individually [12,13], thereby utilizing the advantages of frequency comb and frequency domain pulse shaping simultaneously, allowing the control of more than 100 comb lines at 5 GHz line spacing [14]. However, the disadvantage of this approach is its limited compatibility with optical fiber communication systems, prompting the use of passive fiber devices for pulse shaping, such as fiber Bragg gratings (FBGs) [15] and long-period fiber gratings (LPFGs) [4,16,17]. For example, an LPFG-based flat-top pulse shaper has been used in demultiplexing a 320 Gb/s optical time division multiplexing signal [18].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Programmable Mode-Locked Fiber Laser Using Phase-Only Pulse Shaping and the Genetic Algorithm

et al. 2020

Self Cite

View full text Add to dashboard Cite

A novel, programmable, mode-locked fiber laser design is presented and numerically demonstrated. The laser programmability is enabled by an intracavity optical phase-only pulse shaper, which utilizes the same linearly chirped fiber Bragg grating (LC-FBG) from its two opposite ends to perform real-time optical Fourier transformation. A binary bit-pattern generator (BPG) operating at 20-Gb/s and producing a periodic sequence of 32 bits every 1.6 ns, is subsequently used to drive an optical phase modulator inside the laser cavity. Simulation results indicate stable programmable intensity profiles for each optimized user defined 32 code words. The laser operated in the self-similar mode-locking regime, enabling wave-breaking free operation. The programmable 32 bit code word targeting a specific intensity profile was determined using 100 generations of the genetic algorithm. The control of ultrashort pulse intensity profiles on the picosecond and femtosecond time scales is difficult. The process of stretching and compressing the pulse in the time domain allows for a slower BPG to impose a predefined phase modulation prior to pulse compression. This results in control over the fine features of the intensity profile of the compressed pulse on a picosecond or femtosecond time scale inside the laser cavity. The stability of the proposed scheme depends on the consistency and accuracy of the BPG rise and fall times in practice.

show abstract

Section: Principle Of Operationmentioning

confidence: 99%

Section: Basic Laser Cavitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Programmable Mode-Locked Fiber Laser Using Phase-Only Pulse Shaping and the Genetic Algorithm

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

Molecular alignment induced by a collision with the regulation of super-Gaussian laser pulse

Ge,

Zhao,

Meng

2024

Eur. Phys. J. D

View full text Add to dashboard Cite

Time-transformation technique for generation of optical pulse multiplets in a single mode anomalous dispersion optical fiber

Chatterjee

Basu

2021

Appl. Opt.

View full text Add to dashboard Cite

We present the generation of optical pulse multiplets in the temporal domain from a single pulse using the time-transformation technique for the first time, to the best of our knowledge. The generation of a pair of compressed, well-spaced, and identical Gaussian pulses from a third-order super-Gaussian input pulse when propagated through an anomalous dispersion fiber is reported. Detailed analysis on the effect of variation of input energy, pulse parameters, and optical gain in view of doublet formation leading to the possibility of high effective repetition rate (ERR) at smaller propagating length is reported. The formation of triplets and quadruplets from different input pulse shapes is investigated.

show abstract

Super Gaussian pulse generation in a passively mode-locked fiber laser

Cited by 3 publications

References 26 publications

A Programmable Mode-Locked Fiber Laser Using Phase-Only Pulse Shaping and the Genetic Algorithm

A Programmable Mode-Locked Fiber Laser Using Phase-Only Pulse Shaping and the Genetic Algorithm

Molecular alignment induced by a collision with the regulation of super-Gaussian laser pulse

Time-transformation technique for generation of optical pulse multiplets in a single mode anomalous dispersion optical fiber

Contact Info

Product

Resources

About