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Camille Sophie Brès

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Related publications (154)

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Near-Nyquist optical pulse generation with fiber optical parametric amplification

Camille Sophie Brès, Mohammad Amin Shoaie, Armand Vedadi-Comte

A novel method using optical fiber parametric amplification and phase modulation is proposed in order to generate Nyquist pulses. Using parabolic pulses as a pump, we show theoretically that it is possible to generate Nyquist pulses. Furthermore, we show t ...

Optical Society of America2012

Versatile High Repetition Rate 2-μm Pulsed Source Based on Wideband Parametric Conversion

Camille Sophie Brès, Adrien Billat, Steevy Joyce Cordette

We report an all-fiber pulsed source based on parametric conversion followed by thulium amplification able to deliver picosecond pulses at a repetition rate selectable between 2 and 5 GHz, of which central wavelength can be freely selected in the 2-μm regi ...

IEEE Institute of Electrical and Electronics Engineers2016

Second- and third-order nonlinear wavelength conversion in an all-optically poled Si3N4 waveguide

Tobias Kippenberg, Camille Sophie Brès, Martin Hubert Peter Pfeiffer, Davide Grassani

Silicon nitride (Si3N4) is commonly employed to integrate third-order nonlinear optical processes on a chip. Its amorphous state, however, inhibits significant second-order nonlinear response. Recently, second-harmonic generation enhancement has been obser ...

2019

High Power Sub-Picosecond Pulsed SWIR Source Based on Thulium Assisted Raman Wavelength Shifting

Camille Sophie Brès, Svyatoslav Kharitonov, Adrien Billat, Steevy Joyce Cordette

We demonstrate 1.5W sub-picosecond pulsed source near 2μm. Cavity-less source is based on integrated association of 3rd order Raman wavelength-shifting and thulium amplification. Coherent spectrum of 61.5nm with 49% pump power conversion efficiency is achi ...

2015

Power evolution along phase-sensitive parametric amplifiers: an experimental survey

Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Fatemeh Alishahi, Armand Vedadi-Comte, Andrey Denisov, Thi Minh Phuong Hoang

We propose and experimentally demonstrate a method based on Brillouin optical time-domain analysis to measure the longitudinal signal power distribution along phase-sensitive fiber-optical parametric amplifiers (PS-FOPAs). Experimental results show that th ...

Optical Soc Amer2014

Experimental investigation of pulse generation with one-pump fiber optical parametric amplification

Camille Sophie Brès, Mohammad Amin Shoaie, Armand Vedadi-Comte

In a recent study, the theory of pulse generation with fiber optical parametric amplification using sinusoidal (clock) intensity modulated pump was revisited [1]. This work showed that the pulses generated through such parametric interaction exhibit a shap ...

Optical Society of America2012

Large second harmonic generation enhancement in Si3N4 waveguides by all-optically induced quasiphase- matching

Tobias Kippenberg, Camille Sophie Brès, Martin Hubert Peter Pfeiffer, Davide Grassani, Svyatoslav Kharitonov, Adrien Billat

Efficient second harmonic generation in integrated platforms is usually achieved by resonant structures, intermodal phase-matching or quasi-phase matching by periodically poling ferroelectric waveguides. However, in all these structures, it is impossible t ...

Nature Research2017

Temporal Talbot effect of optical dark pulse trains

Camille Sophie Brès, Jianqi Hu, Jiaye Wu

The temporal Talbot effect describes the periodic self-imaging of an optical pulse train along dispersive propagation. This is well studied in the context of bright pulse trains, where identical or multiplied pulse trains with uniform bright waveforms can ...

OPTICAL SOC AMER2022

Fiber fuse in chalcogenide photonic crystal fibers

Camille Sophie Brès, Jianqi Hu, Svyatoslav Kharitonov, Sida Xing

We observe fiber fuse in tapered GeAsSe photonic crystal fibers (PCF) at around 7 MW∕cm2 of intra-core intensity. Vertically cleaved facets from the un-tapered regions and the tapered regions were imaged. The images show shallow voids of different shapes c ...

2018

Self-injection Locked Second-Harmonic Generation in Optically Poled Silicon Nitride Microresonators

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Edgars Nitiss, Marco Clementi

We present a narrow-linewidth second-harmonic source based on a laser diode injection locked to an optically poled silicon nitride microresonator. The device is a compact, highly-coherent dual-wavelength source, with high conversion efficiency up to 280%/W ...

2023

Broadband difference frequency generation in periodically-poled thin-film lithium niobate

Camille Sophie Brès, Christian André Clément Lafforgue, Yesim Koyaz, Olivia Mathilde Hefti

We demonstrate broadband difference frequency generation by dispersion engineering in periodically-poled thin-film lithium niobate waveguides. In simulations, we show tunable signal bandwidth from 30 nm to 300 nm. Experimentally, we achieve idler generatio ...

Institute of Electrical and Electronics Engineers Inc.2024

Nano-photonic Supercontinuum Based Mid-Infrared Dual-Comb Spectroscopy

Luc Thévenaz, Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Hairun Guo, Wenle Weng, Fan Yang

We demonstrate an approach to dual-comb spectroscopy, based on dispersion engineered and ultra-broadband supercontinuum generation in photonic integrated nonlinear waveguides, and driven by low-noise fiber-laser combs. Both technologies arc statc-of-the-ar ...

IEEE2020

Second-Harmonic Generation via All-Optical Poling in Linearly Uncoupled Silicon Nitride Microresonators

Camille Sophie Brès, Marco Clementi, Ji Zhou

We present a novel device consisting of two microring resonators coupled by the second-order nonlinear interaction. By independently controlling the microresonators' linear properties, we engineer efficient second-harmonic generation through photo-induced ...

Institute of Electrical and Electronics Engineers Inc.2024

Epsilon-near-zero Enhancement of Linear and Nonlinear Thermo-optic Effects

Camille Sophie Brès, Marco Clementi, Jiaye Wu

Epsilon-near-zero (ENZ) materials, characterized by their near-zero permittivity, ease of fabrication, enhanced nonlinearity, and compatibility for nano-fabrication, have positioned themselves as alluring solutions for large-scale integrated systems-on-chi ...

Institute of Electrical and Electronics Engineers Inc.2024

Kerr nonlinearity of Thulium-doped fiber near 2 um

Camille Sophie Brès, Svyatoslav Kharitonov, Adrien Billat, Armand Vedadi-Comte, Steevy Joyce Cordette, Ludovic Zulliger

The nonlinear coefficient and group velocity dispersion of a thulium-doped fiber near 2μm are evaluated via four-wave mixing. Nonlinearity of thulium-doped fiber can be used for the design of doped-fiber lasers in this spectral region. ...

2015

Photo-induced cascaded harmonic and comb generation in silicon nitride microresonators

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Wenle Weng, Jijun He, Jianqi Hu, Edgars Nitiss, Ozan Yakar

Silicon nitride (Si3N4) is an ever-maturing integrated platform for nonlinear optics but mostly considered for third-order [chi(3)] nonlinear interactions. Recently, second-order [chi(2)] nonlinearity was introduced into Si3N4 via the photogalvanic effect, ...

2022

Gas spectroscopy using low threshold mid-infrared radiation generated in Si3N4 waveguides

Tobias Kippenberg, Camille Sophie Brès, Hairun Guo, Davide Grassani, Fan Yang, Eirini Tagkoudi

We report trace-gas absorption spectroscopy based on the efficient generation of a 3.05μm dispersive wave in a Si3N4 waveguide pumped by a 2.09 μm femtosecond mode-locked fiber laser ...

OSA Publishing2019

Erbium doped random fiber laser and fiber mixing effect

Luc Thévenaz, Camille Sophie Brès, Can Yao

We demonstrate an active random fiber laser by directly pumping a 100 m erbium-doped fiber at 980 nm wavelength, with a fiber loop mirror forming a half-open cavity. Random lasing with competing spectral modes in the range from 1535 nm to 1560 nm is achiev ...

2017

Broadband Characterization of ZBLAN Fiber for Short- Wave Infrared Applications Using All-Fiber Interferometer

Camille Sophie Brès, Svyatoslav Kharitonov

Group-velocity dispersion, third-order dispersion and propagation losses of 14m normal dispersion ZBLAN fiber are directly and continuously measured over 1500-2100nm range using all-fiber Mach-Zehnder interferometer. The fiber is then used for dispersion c ...

Ieee2016

UV, visible and near-infrared light generation through cascaded nonlinear processes in silicon-nitride microring resonators pumped at telecom wavelength

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Marco Clementi, Boris Zabelich, Samantha Sbarra

On-chip coherent light generation has wide-ranging applications in metrology, spectroscopy, quantum optics, etc. In this study, we demonstrate the generation of coherent light from a silicon-nitride microring resonator using cascaded nonlinear processes. T ...

SPIE2024