Photonic microwave harmonic generator driven by an optoelectronic ring oscillator

We describe a new architecture to generate microwave signals by optical means. Our system combines the advantages of two techniques: frequency multipliers and loop oscillators. A frequency multiplier allows to obtain high frequencies using frequency harmonic generation, nevertheless, a very good quality reference signal is necessary to drive the system. In our setup, this reference signal is obtained using a loop oscillator. Optoelectronic loop oscillators generate signals with good performance in terms of phase noise and linewidth. We present the theory related to those techniques and the experimental data obtained

Merging of optoelectronic techniques for microwave signal generation

This paper describes some recent evolutions about optical generation of microwave signals. Among these, multiloop ring oscillator and harmonic generation allow both rise in frequency and wide tunability. Besides, using microresonators and optical sources like VCSEL (Vertical Cavity Surface Emitting Laser) induces better integration and lower power consumption. Taking advantage of these attractive features, a new architecture of photonic microwave source is proposed

Asthme et plongée (contre-indication absolue toujours justifiée ?)

RENNES1-BU Santé (352382103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

VCSEL based oscillator for harmonic frequency generation

A new technique to create an opto-electronic oscillator is presented. The optically generated microwave signal is used to manage a system, whose function is to multiply the frequency of the input wave to obtain a suitable reference signal at high frequency for applications ranging from telecommunications to LIDAR systems

The H2020 VERTIGO project towards tbit/s optical feeder links

ISSN:0277-786

Tbit/s Single Channel 53 km Free-Space Optical Transmission - Assessing the Feasibility of Optical GEO-Satellite Feeder Links

A 1 Tbit/s 53km single channel free-space optical (FSO) link is demonstrated. High bandwidth, high order modulation formats and advanced adaptive optics are utilized. We show that the absence of a nonlinear-Shannon limit in combination with adaptive optics enables record data-transmission with low link failures

Plasmonic Modulators for Future Highest-Speed Free Space Optical Communications

Plasmonic modulators have been assessed for operation up to 200 GBaud in a turbulent 53 km free-space-optical link. They are shown to withstand space radiation and large temperature ranges making them ideal for space applications