Dr. Sonia Boscolo Profile

Dr. Sonia Boscolo

Sr. Lecturer at Aston Univ

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Publications (11)

Proceedings Article | 18 March 2024 Paper

Control of optical rogue waves in ultrafast fiber lasers by genetic algorithms

Xiuqi Wu, Ying Zhang, Junsong Peng, Sonia Boscolo, Christophe Finot, Heping Zeng

Proceedings Volume 13104, 1310405 (2024) https://doi.org/10.1117/12.3014645

KEYWORDS: Genetic algorithms, Fiber lasers, Mode locking

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Proceedings Article | 23 May 2018 Presentation

Mitigation of self-phase modulation by sinusoidally time varying phase (Conference Presentation)

Frédéric Audo, Sonia Boscolo, Christophe Finot

Proceedings Volume 10684, 106840Y (2018) https://doi.org/10.1117/12.2306529

KEYWORDS: Phase shift keying, Modulation, Scanning probe microscopy, Nonlinear optics, Telecommunications, Free space optics, Modulators, Beam propagation method, Optical fibers, Beam delivery

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The propagation of intense ultra-short optical pulses in a Kerr medium such as an optical fibre still remains a critical issue for the performance of many optical systems such as beam delivery, optical communication or pulse amplification systems. This is because the self-phase modulation (SPM) of the propagating pulse usually causes a broadening of the pulse spectrum that is typically accompanied by an oscillatory structure covering the entire frequency range. Several strategies have been proposed and successfully deployed to counteract the deleterious effects of SPM in fibre-optic systems. These include spatial or temporal scaling to reduce the impact of nonlinearity via the use of very large mode area fibres or chirped pulse amplification. A different class of approaches relies on the exploitation of the peculiar properties of parabolic shaped pulses and self-similar evolution, the use of other types of pre-shaped input pulses, and the compensation of nonlinear phase shifts with third-order dispersion. However, none of these last techniques preserves the pulse temporal duration. A simple technique to compensate the nonlinear phase due to SPM and related spectrum broadening of nanosecond or picosecond optical pulses consists in using an electro-optic phase modulator to impart the opposite phase to the pulses. This method, which emulates the use of a material with a negative nonlinear index of refraction, has proved successful in fibre-optic and free-space optical telecommunication applications using phase-shift keying systems and in the generation of high-peak-power nanosecond pulses. We have recently experimentally demonstrated that for Gaussian shaped input pulses, the use of a simple sinusoidal drive signal for the phase modulator with appropriate amplitude and frequency is sufficient to reduce the nonlinear spectrum broadening to a large degree, and to significantly enhance the spectral quality of the pulses while their temporal duration remains unaffected. In this paper, we present a comprehensive analysis of the SPM-mitigation method involving the use of a sinusoidal phase modulation. Most of the previous works are primarily experimental in nature and have not discussed the sensitivity of the technique to the initial pulse characteristics. First, we recall the concept of our method and overview our proof-of-principle experiment. Next, we derive an exact closed formula for the rms spectral width of an initially Gaussian pulse after undergoing SPM and with the corrective phase applied, which confirms the substantial reduction of the SPM-induced spectrum broadening attainable with the phase compensation. Then, we describe the impact of the initial pulse shape and duration on the effectiveness of the technique through numerical simulation of the governing equation. We show that for hyperbolic secant pulses, optimisation of the parameters of the modulating sinusoid through a scan of the amplitude-frequency space outperforms the parameter choice based on simple analytic guidelines. By varying the initial pulse duration across an order of magnitude, we highlight the significant differences in performance between pre- and post-propagation compensation schemes, and show that remarkable SPM mitigation is attainable even in the presence of non-negligible fibre dispersion.

Proceedings Article | 14 May 2018 Presentation + Paper

High-repetition-rate femtosecond-laser micromachining of low-loss optical-lattice-like waveguides in lithium niobate

Teerawat Piromjitpong, Mykhaylo Dubov, Sonia Boscolo

Proceedings Volume 10684, 106840D (2018) https://doi.org/10.1117/12.2306643

KEYWORDS: Waveguides, Annealing, Optical tracking, Wave propagation, Lithium niobate, Heat treatments, Polarization, Micromachining, Near field, Laser energy

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Proceedings Article | 27 April 2016 Paper

Switching among pulse-generation regimes in passively mode-locked fibre laser by adaptive filtering

Junsong Peng, Sonia Boscolo

Proceedings Volume 9893, 98930I (2016) https://doi.org/10.1117/12.2225141

KEYWORDS: Optical filters, Mode locking, Dispersion, Fiber lasers, Pulsed laser operation, Solitons, Pulse shaping, Filtering (signal processing), Single mode fibers

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Proceedings Article | 5 June 2010 Paper

Impact of third-order dispersion on the evolution of parabolic pulses

Sonia Boscolo, Brandon Bale

Proceedings Volume 7728, 77280F (2010) https://doi.org/10.1117/12.854782

KEYWORDS: Numerical simulations, Dispersion, Analytical research, Nonlinear optics, Wave propagation, Optical fibers, Phase shift keying, Solids, Fiber amplifiers, Photonics

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Proceedings Article | 4 April 2009 Paper

Optimization and statistical analysis of 21.4 Gb/s RZ-DPSK WDM non-slope matched transmission

Terence Broderick, Sonia Boscolo, Wai Wong

Proceedings Volume 7374, 737402 (2009) https://doi.org/10.1117/12.828991

KEYWORDS: Statistical analysis, Wavelength division multiplexing, Information operations, Modulation, Eye, Phase shifts, Error analysis, Optimization (mathematics), Phase shift keying, Receivers

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Proceedings Article | 11 November 2008 Paper

Simple eye closure penalty estimate for amplitude noise-degraded signals

Terence Broderick, Sonia Boscolo

Proceedings Volume 7136, 71362D (2008) https://doi.org/10.1117/12.803527

KEYWORDS: Eye, Eye models, Systems modeling, Statistical analysis, Distortion, Telecommunications, Interference (communication), Data modeling, Modulation, Numerical simulations

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Proceedings Article | 2 May 2008 Paper

Bit-error rate performance of 20 Gbit/s WDM RZ-DPSK non-slope matched submarine transmission systems

Terence Broderick, Sonia Boscolo, Brendan Slater

Proceedings Volume 7026, 702602 (2008) https://doi.org/10.1117/12.801442

KEYWORDS: Wavelength division multiplexing, Error analysis, Tolerancing, Reliability, Amplitude shift keying, Modulation, Dispersion, Single mode fibers, Channel projecting optics, Forward error correction

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Proceedings Article | 14 June 2006 Paper

All-optical signal regeneration by temporal slicing of nonlinearly flattened optical waveform

Sonia Boscolo, Sergei Turitsyn

Proceedings Volume 6259, 62590J (2006) https://doi.org/10.1117/12.677881

KEYWORDS: Amplitude modulation, Nonlinear optics, Optical amplifiers, Picosecond phenomena, Dispersion, Fiber amplifiers, Modulation, Signal attenuation, Modulators, Optical filters

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Proceedings Article | 11 May 2006 Paper

On the theory of autosoliton propagation in optical fibers guided by in-line nonlinear devices

Sonia Boscolo, Stanislav Derevyanko, Sergei Turitsyn, Alexander Kovalev, Mikhail Bogdan

Proceedings Volume 6255, 625502 (2006) https://doi.org/10.1117/12.676464

KEYWORDS: Nonlinear optics, Optical filters, Systems modeling, Complex systems, Signal attenuation, Optical amplifiers, Electronic filtering, Optical fibers, Telecommunications, Polonium

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Proceedings Article | 7 April 2004 Paper

Characterization of a multiresonance ring resonator-based optical device

Sonia Boscolo, Keith Blow

Proceedings Volume 5478, (2004) https://doi.org/10.1117/12.560945

KEYWORDS: Optical components, Resonators, Waveguides, Nonlinear optics, Wave propagation

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Showing 5 of 11 publications

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