We describe a quasi-all-optical extension dedicated to simplifying the deployment of submarine cabled observatories. Based on power-over-fiber technologies, high power supply and data are both transmitted in one optical fiber of a few kilometers in length. We study the Raman amplification on the down-and upstream data in the static regime with the high optical power varying from 100 mW to 4 W over a 10 km long single-mode optical fiber. We focus on the data optical budget and signal to noise ratio dependence with respect to the high optical power value and the data optical wavelength. We also present the transmission quality in the dynamic regime of this quasi-all-optical extension.

demodulation are not necessary. This leads to a much simple and cost-effective IC design with minimum RF feature. Moreover, the electrical self-mixing is also simultaneously used in the system, and it eliminates the need for high-frequency microwave source at the CS and local oscillator at the BS. The system architecture configuration is simplified and the cost budget is reduced. The proposed scheme shows the promising attraction of DMT modulation and self-mixing for 64QAM-OFDM signals application in future optical millimeter-wave access networks.

International audienceA power-over-fiber system using a single fiber optic of 10km devoted to transmit the energy to supply a remote equipment and also the up/down-stream data exchanged between a shore station and the equipment, is presented in this paper. Firstly, we present an overview of the developed quasi-all-optical architecture and its main communication protocol: the SPI. Then, we focus on its low consumption remote equipment and more precisely on a device called “the interface instrument” which is made of two main units. One realizes the optical toelectrical conversion to provide the power supply. The other one manages the optical data. Afterwards, experimental characterizations of the prototype are given and discussed

International audienceWe describe a 10 km long optically powered data link dedicated to a submarine cabled observatory. A single optical fiber is deployed to both transmit the exchanged data and the energy to supply the remote instrument. We focus on the optical phenomena which occur in the optical fiber due to the presence of the high optical power, and its superimposition with the optical data streams. We study the advantages, the constraints and the limits of such a system, and we determine the best configuration to collect the maximum electrical power after the O/E conversion, and to transmit the data with the best quality