6533b825fe1ef96bd12828ef
RESEARCH PRODUCT
40 GHz pulse source based on cross-phase modulation-induced focusing in normally dispersive optical fibers.
Javier NuñoJulien FatomeM. GillesMassimiliano GuasoniChristophe FinotBertrand Kiblersubject
PhysicsOptical fiberbusiness.industryCross-phase modulation02 engineering and technologySignalAtomic and Molecular Physics and Opticslaw.invention020210 optoelectronics & photonicsOpticsModulationPulse compressionlawDispersion (optics)0202 electrical engineering electronic engineering information engineeringPulse wavebusinessPhase modulationdescription
We theoretically and experimentally investigate the design of a high-repetition rate source delivering well-separated optical pulses due to the nonlinear compression of a dual-frequency beat signal within a cavity-less normally dispersive fiber-based setup. This system is well described by a set of two coupled nonlinear Schrodinger equations for which the traditional normally dispersive defocusing regime is turned in a focusing temporal lens through a degenerated cross-phase modulation process (XPM). More precisely, the temporal compression of the initial beating is performed by the combined effects of normal dispersion and XPM-induced nonlinear phase shift provided by an intense beat signal on its weak out-of-phase replica co-propagating with orthogonal polarizations. This adiabatic reshaping process allows us to experimentally demonstrate the generation of a 40 GHz well-separated 3.3 ps pulse train at 1550 nm in a 5 km long normally dispersive fiber.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-03-16 | Optics letters |