Camille Sophie Brès

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A simple analytic formula is derived to extract tiny dispersion fluctuations along highly nonlinear fibers from distributed measurements of parametric gain. A refined BOTDA scheme, suitable to track Kerr processes, enables low noise measurements. ...

Quasi-phase-matching for efficient backward second-harmonic generation requires sub-μm poling periods, a nontrivial fabrication feat. For the first time, we report integrated first-order quasiphase-matched backward second-harmonic generation enabled by see ...

We demonstrate soliton based radiofrequency filters using a 104 GHz Si3N4 microresonator. The filter passband frequencies are widely reconfigured via inherent soliton states of perfect soliton crystals and two-soliton microcombs, without any external pulse ...

We present a Nyquist pulse generation technique based on a single Mach-Zehnder modulator driven by a multi-harmonic electrical signal. The direct control of the RF components yields a range of 10 GHz sinc-shaped pulse train. ...

A scheme based on 2-pump OPA is proposed for uniform wavelength conversion and optimized compression. We show 4.7-fold compression over 32 nm range resulting in Gaussian pulses from sinusoidal modulation and enabling simultaneous compression of WDM channel ...

We report the design of a short-wave infrared continuous-wave light source featuring a 20 mW average output power, and with a wavelength that can be freely selected in the 2000-2100 nm range amid a low power ripple. The operating principle relies on the si ...

We present a method to produce optical sinc-shaped Nyquist pulses with virtual zero roll-off factor based on the synthesis of phase-locked, rectangular-spectrum frequency combs. Tunability and reconfigurability are shown with

We demonstrate for the first time azimuthal Talbot effect based on orbital angular momentum beams. The intensity petal is self-imaged in the azimuthal angle. We also draw the analogy between azimuthal and temporal Talbot effect. ...

Microresonators are powerful tools to enhance the efficiency of second-order nonlinear optical processes, such as second-harmonic generation, which can coherently bridge octave-spaced spectral bands. However, dispersion constraints such as phase-matching a ...

We experimentally demonstrate broadband degenerate continuous-wave four-wave mixing in long silicon nitride (Si3N4) waveguides for operation both in the telecommunication L-band and the thulium band near 2 mu m by leveraging polarization dependence of the ...

The rapidly maturing integrated Kerr microcombs show significant potential for microwave photonics. Yet, state-of-the-art microcomb-based radiofrequency filters have required programmable pulse shapers, which inevitably increase the system cost, footprint, ...

A method to measure the signal power evolution along phase-sensitive parametric amplifiers is proposed using Brillouin optical time-domain analysis. Different evolutions along the fiber are reported by varying input wave phases, including amplification and ...

We demonstrate a figure-of-9 all-fiber thulium-doped laser (TDFL) that generates 560 fs long pulses at 1948 nm wavelength. In order to achieve self-starting passive mode-locking, we utilize an in-fiber Faraday rotator to induce a nonreciprocal phase shift. ...

We demonstrate reconfigurable microwave photonic filters based on two-soliton microcombs. The filter passbands can be reconfigured inherently via the various angles between two solitons of microresonator, without involving programmable pulse shapers. (C) 2 ...

We demonstrate the hybrid-pumped (continuous-wave+pulsed) gain-switched smallcore thulium-doped fiber laser tunable in 1825-2064nm spectral range that delivers 50-300ns pulses with energies up to 12μJ (65μJ of injected pump) reaching performance of larger- ...

The tool of choice to measure optical frequencies with extremely high precision is the optical frequency comb. Camille-Sophie Bres explains what makes this technique so powerful. ...

We present a cost-effective electro-optic frequency comb generation and equalization method using a single phase modulator inserted in a Sagnac interferometer layout. The equalization relies on the interference of comb lines generated in both clockwise and ...

We show how spatiotemporal quasi-phase-matching emerges from all-optical poling of silicon nitride microresonators. Enabled by the coherent photogalvanic effect, the photoinduced χ(2) grating oscillates in space and time, yielding quasi-phase-matched and D ...

An optically stabilized dual-comb system at telecom wavelength is used to drive a mid-infrared spectroscopy for parallel gas-phase detection in the functional group region from 2800-3600 cm -1 . A coherent broadband intensity-enhanced spectrum in the mid-i ...

We develop a device consisting of two silicon nitride microresonators coupled by photo-induced second-order nonlinearity. By electrically reconfiguring its linear properties, we engineer efficient resonant frequency doubling in the telecom band and show th ...

Camille Sophie Brès

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Mapping Dispersion Fluctuations along Optical Fibers Using Brillouin Probing and a Fast Analytic Calculation

Integrated Backward Second-Harmonic Generation through Optically Induced Quasi-Phase-Matching

Reconfigurable Radiofrequency Photonic Filters Based on Soliton Microcombs

Flexible Width Nyquist Pulse Based on a Single Mach-Zehnder Modulator

Broadband Uniform Wavelength Conversion and Time Compression of WDM Channels

Broadly tunable source around 2050 nm based on wideband parametric conversion and thulium–holmium amplification cascade

Optical Sinc-shaped Nyquist Pulses from Rectangular Frequency Comb Synthesis for High Spectral Efficiency

Self-imaging of Azimuthal Intensity Petal Based on Orbital Angular Momentum Beams

Ultrabroadband milliwatt-level resonant frequency doubling on a chip

Polarization selective ultra-broadband wavelength conversion in silicon nitride waveguides

Reconfigurable radiofrequency filters based on versatile soliton microcombs

Distributed Measurement of Signal Power Evolution in a Phase Sensitive Parametric Amplifier

Wavelength-stabilized figure-of-9 thulium-doped all-fiber laser emitting 560 fs pulses

Two-soliton Microcombs Enabled Reconfigurable Microwave Photonic Filters

Microjoule-level widely tunable gain-switched thuliumdoped fiber laser

With a fine-tooth comb

Cost-effective equalization of electro-optic frequency combs in a Sagnac interferometer

Spatiotemporal Quasi-Phase-Matching in Microresonators

Nanophotonic Supercontinuum-Based Mid-Infrared Dual-Comb Spectroscopy

Broadband Resonant Second-Harmonic Generation in Silicon Nitride Microresonators