Laurent Vivien
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View article: Pulse Generation by On‐Chip Dispersion Compensation at 8 µm Wavelength
Pulse Generation by On‐Chip Dispersion Compensation at 8 µm Wavelength Open
The mid‐infrared spectral region holds growing importance for applications such as gas sensing and spectroscopy, and compact ultrashort pulse laser sources are essential to enable these applications. However, the fast gain dynamics of inte…
View article: High-resolution broadband characterization of resonance dispersion in an optical microresonator
High-resolution broadband characterization of resonance dispersion in an optical microresonator Open
Accurate knowledge of the uneven free spectral range of an optical microresonator, which provides direct insight into group velocity dispersion, is essential for understanding and controlling Kerr frequency comb dynamics. In this work, we …
View article: Single-layer silicon metalens for broadband achromatic focusing and wide field of view
Single-layer silicon metalens for broadband achromatic focusing and wide field of view Open
Achieving simultaneous broadband achromatic focusing and a wide field of view remains a significant challenge for metalenses. In this work, we begin with a quadratic phase profile, enabling full field-of-view designs, and apply dispersion …
View article: On-chip supercontinuum generation: from recent advances to applications [Invited]
On-chip supercontinuum generation: from recent advances to applications [Invited] Open
Nonlinear frequency conversion is crucial for reaching new optical frequencies and creating light sources that are essential for research and industrial applications. Among the various strategies to generate a multispectral source, superco…
View article: Mid-infrared pulse compression on SiGe photonic integrated circuit
Mid-infrared pulse compression on SiGe photonic integrated circuit Open
International audience
View article: Low-power supercontinuum generation in Ge-rich SiGe waveguides from 4 to 13 <i>μ</i>m wavelength
Low-power supercontinuum generation in Ge-rich SiGe waveguides from 4 to 13 <i>μ</i>m wavelength Open
The development of on-chip spectroscopic systems has attracted a lot of attention in recent years. Such systems require broadband mid-infrared sources, resulting in the exploration of mid-infrared supercontinuum generation. This study focu…
View article: Single-layer silicon metalens for broadband achromatic focusing and wide field of view
Single-layer silicon metalens for broadband achromatic focusing and wide field of view Open
Achieving simultaneous broadband achromatic focusing and a wide field of view remains a significant challenge for metalenses. In this work, we begin with a quadratic phase profile, enabling full field-of-view designs, and apply dispersion …
View article: Compact silicon-germanium microresonators for long-wave infrared frequencies
Compact silicon-germanium microresonators for long-wave infrared frequencies Open
We report on the fabrication and investigation of compact microresonators (100 µm radius) operating in the long-wave infrared range, exploiting silicon-germanium graded waveguides. Two designs are considered and demonstrate intrinsic quali…
View article: Multi-dimensional frequency-bin entanglement-based quantum key distribution network
Multi-dimensional frequency-bin entanglement-based quantum key distribution network Open
Quantum networks enhance quantum communication schemes and link multiple users over large areas. Harnessing high dimensional quantum states - i.e. qu-d-its - allows for a denser transfer of information with increased robustness to noise co…
View article: On-chip pulse generation at 8 μm wavelength
On-chip pulse generation at 8 μm wavelength Open
The mid-infrared spectral region holds growing importance for applications such as gas sensing and spectroscopy. Although compact ultrashort pulse laser sources are essential to enable these applications, their realization in this spectral…
View article: Integrated polarization beam splitters in the silicon nitride platform for 950 nm and 1300 nm wavelengths
Integrated polarization beam splitters in the silicon nitride platform for 950 nm and 1300 nm wavelengths Open
Photonic integration in a silicon nitride (SiN) platform enables low propagation losses and a wide transparency range, making it ideal for quantum applications. However, polarization control in SiN is challenging because of its low birefri…
View article: Bistable soliton optical frequency combs in a second-harmonic generation Kerr cavity
Bistable soliton optical frequency combs in a second-harmonic generation Kerr cavity Open
We study the dynamics and stability of soliton optical frequency comb generation in a dissipative, coherently pumped cavity with both second- and third-order nonlinearity. Cavity sweep simulations and linear stability analysis based on pat…
View article: Critical nonreciprocity in gyrotropic coupled-waveguide system for TE-mode optical isolator and circulator
Critical nonreciprocity in gyrotropic coupled-waveguide system for TE-mode optical isolator and circulator Open
Photonic integrated circuits (PICs) increasingly require more advanced integrated functionalities and devices to meet the key application challenges. This evolution with the serial integration of optical functions in the same photonic circ…
View article: Low threshold mid-infrared supercontinuum generation in GaAs<sub>0.51</sub>Sb<sub>0.49</sub>/InP waveguides
Low threshold mid-infrared supercontinuum generation in GaAs<sub>0.51</sub>Sb<sub>0.49</sub>/InP waveguides Open
Chip-scale broadband light sources in the mid-infrared spectral range are highly desirable for the development of compact spectroscopy and sensing instrumentation in the molecular fingerprint region. Recently, generation of sub-picosecond …
View article: Interplay of <i>χ</i><sup>(2)</sup> and <i>χ</i><sup>(3)</sup> effects for microcomb generation
Interplay of <i>χ</i><sup>(2)</sup> and <i>χ</i><sup>(3)</sup> effects for microcomb generation Open
While frequency comb generation in passive nonlinear optical cavities has been demonstrated in purely quadratic and Kerr platforms, the interplay between χ (2) and χ (3) effects is yet to be fully understood. In this work, we propose a dou…
View article: Enhancing stimulated Brillouin scattering in suspended silicon waveguides through subwavelength nanostructuration [Invited]
Enhancing stimulated Brillouin scattering in suspended silicon waveguides through subwavelength nanostructuration [Invited] Open
Brillouin optomechanics is playing a key role in the development of groundbreaking devices and novel functionalities in integrated silicon photonics, such as narrow linewidth filtering and lasers, tunable frequency, non-reciprocity, etc. M…
View article: Demonstration of SiC-on-Insulator Substrate with Smart Cut™ Technology for Photonic Applications
Demonstration of SiC-on-Insulator Substrate with Smart Cut™ Technology for Photonic Applications Open
Silicon-carbide-on-insulator (SiCOI) is a promising platform for photonic integrated circuits. However, the development of this new photonic platform is hindered by the lack of high-quality commercial SiC-on-insulator substrates. In this s…
View article: Experimental demonstration of continuous-variable quantum key distribution with a silicon photonics integrated receiver
Experimental demonstration of continuous-variable quantum key distribution with a silicon photonics integrated receiver Open
Quantum key distribution (QKD) is a prominent application in the field of quantum cryptography, providing information-theoretic security for secret key exchange. The implementation of QKD systems on photonic integrated circuits (PICs) can …
View article: Parallelization of frequency domain quantum gates: manipulation and distribution of frequency-entangled photon pairs generated by a 21 GHz silicon microresonator
Parallelization of frequency domain quantum gates: manipulation and distribution of frequency-entangled photon pairs generated by a 21 GHz silicon microresonator Open
International audience
View article: Generation of multiple user-defined dispersive waves in a silicon nitride waveguide
Generation of multiple user-defined dispersive waves in a silicon nitride waveguide Open
The quest for a wide and bright supercontinuum source has received significant attention, addressing pivotal challenges in ultra-fast spectroscopy, imaging, and frequency metrology. Among the diverse optical nonlinear mechanisms steering s…
View article: Low-loss SiGe waveguides for mid-infrared photonics fabricated on 200 mm wafers
Low-loss SiGe waveguides for mid-infrared photonics fabricated on 200 mm wafers Open
This article presents low-loss mid-infrared waveguides fabricated on a Ge-rich SiGe strain-relaxed buffer grown on an industrial-scale 200 mm wafer, with propagation losses below 0.5 dB/cm for 5-7 µm wavelengths and below 5 dB/cm up to 11 …
View article: Tunable On‐Chip Electro‐Optic Frequency‐Comb Generation at 8 μm$\umu {\rm m}$ wavelength
Tunable On‐Chip Electro‐Optic Frequency‐Comb Generation at 8 μm$\umu {\rm m}$ wavelength Open
The development of compact systems operating in the long‐wave infrared wavelength range is of high interest for spectroscopic and sensing applications. There is currently a wide interest toward the development of optical frequency‐combs to…
View article: Polarization independent silicon grating antenna based on sub-wavelength metamaterials
Polarization independent silicon grating antenna based on sub-wavelength metamaterials Open
Optical antennas are key components of an optical phased array system, enabling light coupling between the chip and the free space. In such systems, surface gratings are commonly used as antenna elements, which however suffer from a strong…
View article: Optimized polarization insensitive grating antenna in the SOI platform
Optimized polarization insensitive grating antenna in the SOI platform Open
International audience
View article: Silicon broadband metalens with wide field of view for optical beam steering in free space
Silicon broadband metalens with wide field of view for optical beam steering in free space Open
We report on a broadband and wide field of view metalens design based on a quadratic phase profile. Exploiting meta-atoms dispersion, the metalens focal length shows a negligible dependence on wavelength throughout the 1500 - 1600 nm wavel…
View article: Hybrid InP/SiN photonic integrated circuits for RF systems and optical sensing
Hybrid InP/SiN photonic integrated circuits for RF systems and optical sensing Open
In this paper we present the developments carried out at III-V lab in collaboration with CEA-Leti on the hybridintegration of III-V chips with ultra-low-loss silicon nitride circuits for optical detection and RF systems. Different typesof …
View article: Hybrid Photonics: Integration, Design and Devices feature issue: publisher’s note
Hybrid Photonics: Integration, Design and Devices feature issue: publisher’s note Open
“Invited” was added to the title of a paper [ Opt. Mater. Express 14 , 862 ( 2024 ) 10.1364/OME.511923 ] in error.
View article: Hybrid Photonics: Integration, Design and Devices: feature issue introduction
Hybrid Photonics: Integration, Design and Devices: feature issue introduction Open
We introduce the Optical Materials Express feature issue on Hybrid Photonics: Integration, Design and Devices. This issue comprises a collection of ten papers including six invited and four contributed papers from well-established research…