SOA - NOLM in Reflective Configuration for Optical Regeneration in High Bit Rate Transmission Systems

This paper presents a theoretical and experimental investigation of optical signal regeneration properties of a non-linear optical loop mirror using a semiconductor optical amplifier as the active element (SOA-NOLM). While this device has been extensively studied for optical time division demultiplexing (OTDM) and wavelength conversion applications, our proposed approach, based on a reflective configuration, has not yet been investigated, particularly in the light of signal regeneration. The impact on the transfer function shape of different parameters, like SOA position in the interferometer and SOA input optical powers, are numerically studied to appreciate the regenerative capabilities of the device.Regenerative performances in association with a dual stage of SOA to create a 3R regenerator which preserves the data polarity and the wavelength are experimentally assessed. Thanks to this complete regenerative function, a 100.000 km error free transmission has experimentally been achieved at 10 Gb/s in a recirculating loop. The evolution of Bit Error Rate for multiple pass into the regenerator and the polarization insensitivity demonstration to input data are presented

La Boucle à Recirculation Courte: Un nouvel outil pour evaluer une ligne de transmission régénérée optiquement

session orale 31 « Systèmes et réseaux de télécommunications » [Ma31]National audienceNous présentons une technique pour caractériser la cascadabilité et la résistance au bruit d'un régénérateur optique. L'impact du rapport signal sur bruit optique sur les performances du régénérateur ainsi que l'efficacité de la régénération sont évalués au débit de 42,6 Gbit/s

Impact du décalage du filtre sur les performances d'un convertisseur en longueur d'onde à base de SOA et filtrage décalé

session 4 «Systèmes et réseaux de télécommunications optiques » [S4O1]National audienceNous analysons l'efficacité d'un convertisseur en longueur d'onde composé simplement d'un amplificateur à semi-conducteurssuivi d'un filtre et qui n'inverse pas la polarité du signal entre entrée et la sortie. Pour cela des mesures de taux d'erreurs binaires ainsi que de profils temporels des impulsions de sortie via un FROG (Frequency Resolved Optical Gating) sont réalisées pour différents débits allant jusqu'à 80 Gbit/s

Laser Fabry-Perot verrouillé en longueur d'onde par injection optique pour le réseau d'accès

session orale Lu2 « Amplificateurs et Lasers à semi-conducteurs » [Lu2.2]National audiencePour les futurs réseaux d'accès optique multiplexés en longueur d'onde (de type WDM-PON), des émetteurs optiques bas-coûts et identiques pour chaque abonné sont souhaitables. Ces composants doivent pouvoir être modulés à 10 Gbps, tout en ayant une accordabilité en longueur d'onde. Cette dernière propriété peut-être assurée en verrouillant un laser Fabry-Perot multimode par injection optique. Nous présentons les propriétés d'un tel laser injecté : son efficacité en verrouillage, la réduction du bruit d'intensité et l'amélioration très importante de la fréquence de relaxation

16x2.5 Gbit/s Downstream Transmission in Colorless WDM-PON based on Injection-Locked Fabry-Perot Laser Diode using a single Quantum Dash mode-locked Fabry-Perot laser as multi-wavelength seeding source

technical session OThA " WDM-Access II "International audienceError-free colorless WDM-PON downstream over 25 km for 16 channels with 85 GHz channel spacing is experimentally demonstrated at 2.5 Gbit/s, using an injection-locked Fabry-Perot laser and a quantum dash mode-locked laser as a coherent seeding source

Characterisation of semiconductor optical amplifiers for all-optical regeneration

OralInternational audienceWe report on the characterisations of different semiconductor optical amplifiers (SOA) which are designed and fabricated for All-Optical Regeneration. Dynamic measurements in pump-probe configuration show short time response of around 50 ps. Chirp measurements by FROG technique are also reported. The characterisations demonstrate the potential of these components to be associated with interferometer and optical filtering in order to achieve regeneration functions at bit rates of 40 Gbit/s and above

Investigation of SOA-based wavelength conversion at 80 Gb/s using bandpass filtering

This paper presents a simple and effective 80 Gb/s wavelength conversion scheme by using Cross Gain Modulation in a Semiconductor Optical Amplifiers (SOA) in conjunction with filtering the blue shifted component of the probe spectrum to give a non-inverted output signal

Colorless Components for WDM-based Optical Access Networks

Section B "PHOTONICS & LASERS AND APPLICATIONS" [B-45]International audienceThis paper presents our work carried out in the colorless-component technologies for high bit-rate optical access networks, which are based on WDM-PON (wavelength division multiplexed passive optical networks). The colorless concept consists in using identical and wavelength-independent components that will act as the generic transmitter in WDM-PON systems. The transmitted wavelength is imposed, for each colorless component, by an external optical signal. Our studies include two types of colorless components: The Injection-Locked Fabry-Perot laser (IL-FP) and the Reflective Electro-Absorption Modulator integrated with a Semiconductor Optical Amplifier (REAM-SOA). For the IL-FP, the properties of the component strongly depend on the injected optical signal. We demonstrate the improvement by injection-locking of the laser's performances in terms of intensity noise, chirp and bandwidth. For the REAM-SOA, the static properties such as reflection gain and noise characteristic are examined. We demonstrate the feasibility of the REAM-SOA in a transmission experiment in a PON configuration at 10 Gbps with up to 25 km of SMF, using remote modulation technique

Quantum Dash Actively Mode-locked Fabry-Perot Laser Module demonstrated as part of a Wavelength Tunable RZ Transmitter

International audienceA quantum dash Fabry-Perot actively modelocked laser module is tested as part of a 42.7 Gbit/s transmitter with more than 10 nm wavelength tunability. Its low chirp level is also assessed through chromatic dispersion tolerance measurements