A5084924515- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Advanced Photonic Communication Systems
- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Spectroscopy and Laser Applications
- Terahertz technology and applications
- Advanced Optical Network Technologies
- Silicon Nanostructures and Photoluminescence
- Mechanical and Optical Resonators
- Phase-change materials and chalcogenides
- Advanced optical system design
- Optical Coherence Tomography Applications
- Semiconductor Quantum Structures and Devices
- Laser Material Processing Techniques
- Optical Coatings and Gratings
- Advanced Surface Polishing Techniques
- Photonic Crystals and Applications
- Nanofabrication and Lithography Techniques
- Nonlinear Optical Materials Research
- Analytical Chemistry and Sensors
- Induction Heating and Inverter Technology
- Superconducting and THz Device Technology
Fonctions Optiques pour les Technologies de l’information
2015-2024
Centre National de la Recherche Scientifique
2007-2023
Orange (France)
1993-2023
Université de Rennes
2007-2023
Université Européenne de Bretagne
2010-2012
Foton Motors (China)
2008-2009
Laboratoire d'Optique Appliquée
2000-2003
École Normale Supérieure - PSL
2001
Centre Hospitalier Lannion Trestel
2000
We propose a new solution for modal decomposition in multimode fibers, based on spectral and spatial imaging technique. The appearance of spurious modes the processing images at output fiber under test when it has more than two is demonstrated theoretically. method, which allows us to identify modes, accurate, simpler, faster previously reported methods. For demonstration, measurements standard step-index small-core microstructured are carried out successfully.
We report a chalcogenide suspended-core fiber with ultra-high nonlinearity and low attenuation loss. The glass composition is As(38)Se(62).With core diameter as small 1.13 µm, record Kerr of 46,000 W(-1) km(-1) demonstrated loss 0.9 dB/m. Four-wave mixing experimented by using 1m-long for 10 GHz 42.7 signals. efficiencies -5.6 dB at -17.5 are obtained. also observed higher orders four-wave both repetition rates.
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Self-phase modulation and 10-GHz four-wave mixing are demonstrated in a low-loss ultra-highly nonlinear suspended-core chalcogenide fiber. A record Kerr nonlinearity of 31 300 is measured direct evidence fast response time-resolved measurement the frequency conversion high repetition rate provided.
We report on the first demonstration of wavelength demultiplexing a 100-Gb/s nonreturn to zero signal four channels at 25 Gb/s, based resonant structures implemented in GaInP photonic crystals. The device is composed filters H0 cavities with one common input bus and drop outputs showing very small footprint. measured characteristics show good performances terms transmission crosstalk insertion losses 11 dB best port. System measurements have validated its operation <; 1-dB power penalty bit...
The performance of a ring-resonator based passive wavelength router, suitable for optical networking at chip level, is evaluated through bit error rate measurements in single channel 10 Gb/s and 3-channel WDM configurations. As the routing path involves different number elements, depending on used propagating signal, three output ports with respect to specified input one are experimentally discussed. Measurements show that low rejection filter elements due fabrication issues mostly affect...
New microoptics are proposed to interconnect single-mode fiber (SMF) ribbons. These allow the increase of spot size. Low loss, wide misalignment tolerances, long working distance, and low cost could be achieved. The fabrication process experimental results presented.
In this paper, we perform a frequency up-conversion from 4.5 GHz to 60 of an OFDM signal compliant the IEEE802.15.3c pre-standard (3.03 Gbps) by directly modulating Fabry-Pérot Mode-Locked Laser whose self-pulsating is 54.8 GHz. Improved performance compared external modulation scheme previously reported achieved and comparison with use standard electronic up-converter shows only slight degradation. The direct represents major improvement in terms set-up simplicity improves efficiency...
This article deals with coupling efficiency and reflectance analysis of graded-index expanded-beam connectors. We point out the best conditions to take advantage expanded beam connectors for relaxing lateral offset tolerances without going down critical angle misalignments tolerances. The influence manufacturing defaults by tilt on are theoretically analyzed, investigated, compared experimental results. study explains an interesting standard single-mode fibers. demonstrate explain why we can...
A new combination of porous silicon and polymer optical waveguides is investigated for two different designs Vernier effect based sensors the surface detection Bovine Serum Albumin (BSA) molecules. The hybrid structures studied consist cascaded micro-resonators one a micro-resonator with Mach-Zehnder other. Because its high specific bio-compatibility, we use to implement in sensing part sensor into which BSA molecules are grafted. Polymer then used reference because their low losses. We...
A 100 Gbit/s/ <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\lambda $ </tex-math></inline-formula> PAM-4 fiber link with an optical budget of 30 dB and 20 km reach is achieved in real time experiments. This compliant class (20 dB) point to (PtP) applications as mobile fronthaul for example, N1 (29 multipoint (PtMP) residential market. We used integrated externally modulated laser, analog pre-equalizer,...
Abstract In this paper we present a review of different micro-lenses have developed at the end single-mode fibers for improving optical coupling efficiency in communication systems. These find their applications laser-diodes or integrated waveguides to single mode fibers, fiber detector coupling, fiber-to-fiber interconnecting. More generally, concern active passive components coupling. Three kinds are considered whose fabrication process has been designed be very simple and low cost. Some...
We report on all-optical wavelength conversion of a 56 Gb/s differential quadrature phase shift keying signal and 42.7 on-off signal. Wavelength is based four-wave mixing effect in 1 m long highly nonlinear GeAsSe chalcogenide fiber. The high nonlinearity the fiber allows low-power penalty operation with total average power less than 60 mW.
A compact large Gaussian mode field diameter single-mode fiber is developed. This expanded consists of splicing fibers with various lengths and characteristics. The principle this optical arrangement to excite the first propagation multimode graded index preserve a field. coupling properties are numerically analyzed, considering effects gap, radial offset, tilt. connections loss between same kinds 18 µm measured an average 0.55 dB. preserved on long length >20 cm.
In this paper, we analyse and demonstrate the use of photonic functions to fulfill requirements 60 GHz broadband radio communication systems for access home area networks. domain, high capacity mmW are used as point links mobile backhaul or bridges between fixed transport We first provision 10 GbE compatible using OOK modulation over a carrier suitable outdoor operation up 40 m with prospects range extension several hundred meters. Secondly, vector demodulation bandwidth efficient LAN...
We demonstrate the interest of expanded beam microlenses (around 55 µm mode field diameter) to relax positioning tolerances and decrease reflectance in single fiber interconnexions. also point out micro-lenses very small diameter 2 µm) improve coupling efficiency specialty fibers integrated waveguides for non linear effects based functions sensors applications at a wavelength 1.55 µm.
A report is presented on four‐wave‐mixing‐based all‐optical time‐domain demultiplexing of a 170.8 Gbit/s signal down to 42.7 in chalcogenide GeAsSe microstructured fibre. The high nonlinearity the fibre allows error‐free and low power penalty operation with only 56 mW total input average power.
We have developed a simple and low-cost microlens for optical communication systems involving the coupling of laser diodes or integrated waveguides to single-mode fibers (SMFs), fiber-to-fiber interconnection. More generally, applications concern active passive components SMFs. The novelty consists in using graded-index section 125-µm core diameter without cladding taking into account diffraction effects. This new offers wider range mode field diameters (from around 5 90 µm) working...
The future technology migration in access networks compels the development of key innovative transmitters operating at 10 Gb/s around 1550 nm and capable transmitting data extended reach passive optical (>60 km). A laser modulated directly appears to be a low cost simple solution address these needs. However, extinction ratio distance transmission are limited by frequency chirping inherent high bit rate modulation nm. In this letter, we demonstrate monolithic integration lasers ring...
A high-speed germanium on silicon APD is demonstrated for DSP-free 50G-PONs. Sensitivities of -24 dBm at 58.2 Gbit/s and -26.5 50 over 60 km fiber are experimentally obtained in real time with temperature from -40°C to 80°C.
A new concept is proposed for lensed fibres fabricated according to a collective and low cost process. This process based on the cleaving splicing of optical fibre ribbons suitable coupling laser diode arrays ribbons.
We propose and demonstrate a nondestructive method for loss measurement in optical guided structures. In the proposed approach, device under test does not require connectors at its ends, thus making this technique available both fibers integrated waveguides. The is feasible over broad range, from low (0.2 dB/km) to high (of order of 1 dB/mm) values. This validated through measurements performed on microstructured holey fiber photonic-crystal waveguide. obtained results are good agreement...