Transmission RZ de 40x40 Gbit/s sur 3 pas de 40 dB de Fibre Standard avec 27.4 dB de Gain Raman contra-propagatif et un EDFA de 27 dBm

session V « Systèmes de télécommunication » [502]National audienceLes amplificateurs EDFA forte puissance semblent de bons candidats pour des liaisons festons DWDM. Nous démontrons expérimentalement la transmission de 40 canaux à 40 Gbit/s sur la bande C sur 3 pas de 40 dB de pertes avec une modulation RZ classique

Contribution a l'etude et a la realisation de lasers a fibre dopee aux ions de Terres Rares

SIGLEAvailable from INIST (FR), Document Supply Service, under shelf-number : T 77871 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Traitement de la donovanose par azithromycine (à propos de quatre cas en Guyane Française)

BREST-BU Médecine-Odontologie (290192102) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Double-clad 10 W Yb3+-doped Fiber Master Oscillator Power Fiber Amplifier for He3+ Optical Pumping

International audienceWe describe an all-fiber ytterbium-doped laser followed by a double-stage ytterbium-doped double-clad fiber amplifier of 10-W output power for helium pumping. Different cavity designs are investigated with the goal of achieving high-power multimode emission at 1083 nm, wavelength tunability over the helium absorption bands, and linewidth envelope control over the range 1-3 GHz. We point out the domains with unstable output power and discuss their origin

Erbium Laser Model for Two-Wavelength Operation

A theoretical modeling of dual wavelength operation of erbium-doped fibre lasers is presented. The model is a generalization of the one used in the single mode theory, based on the existence of isolated ions and ion pairs coupled via the laser field. Analytical results are obtained in the steady state. The linear stability analysis of the coupled equations shows the existence of two pairs of complex conjugate eigenvalues and two real negative eigenvalues. These results imply that the system is driving by two frequencies : one associated with the classical relaxation oscillation and a low frequency characteristic of a bimodal system. When the ion pair concentration is increased, the real part of one pair of conjugate eigenvalues becomes positive. In such a situation, self-pulsing and chaotic dynamics occur together with antiphase effects between two mode intensities. Locking of the low frequency on a subharmonic of the high frequency is also obtained leading to nT-periodic orbits

40x40.0 Gb/s RZ Transmission over 3x40 dB SSMF Spans using 27.4 dB Contra-Raman Gain and +27 dBm EDFA

session We4.P « 4th Quarter Poster Session » [We4.P.123]International audienceHigh-power EDFA seem appropriate candidates for DWDM festons links. Indeed, we experimentally demonstrated their use in the transmission of 40 channels covering full C-band at 40.0 Gb/s over 3x40dB-loss SSMF spans using conventional RZ modulation

1.6 Terabit/s RZ Transmission over 4x40 dB SSMF spans using 27.4 dB Contra-Raman Gain and +26.5 dBm EDFA

session PDP « Postdeadline papers » [PDP5]International audienceHigh-power EDFA seem appropriate candidates for repeated festoon links: we experimentally demonstrate their use in the full C-band transmission of 40 channels at 40.0 Gb/s over 4x40dB-loss SSMF spans using conventional RZ modulation