6533b82afe1ef96bd128c211
RESEARCH PRODUCT
Duty-ratio control of Nonlinear phase noise in dispersion-managed WDM transmissions using RZ-DPSK modulation at 10 Gb/s
Stefan WabnitzOzdal BoyrazA. Tonellosubject
PhysicsAmplified spontaneous emissionbusiness.industrynonlinear opticsPhysics::OpticsKeying02 engineering and technology01 natural sciencesAtomic and Molecular Physics and Optics010309 optics020210 optoelectronics & photonicsOpticsoptical fiber communication[ PHYS.PHYS.PHYS-AO-PH ] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]Duty cycleModulationWavelength-division multiplexing0103 physical sciencesPhase noise0202 electrical engineering electronic engineering information engineeringBit error rateElectronic engineeringbusinessPhase modulationphase modulationdescription
International audience; The authors compare analytical and numerical estimates, showing that the nonlinear phase noise of short optical pulses associated with the coupling between amplified spontaneous emission noise and fiber nonlinearity may be controlled by adjusting the duty cycle of the return-to-zero (RZ) signal modulation format. The impact of this effect in the optimization of the performance of 10-Gb/s dispersion-managed wavelength division multiplexed (WDM) systems using RZ-differential phase-shift keying (DPSK) modulation is discussed. By extensive numerical simulations, it is shown that the transmission quality of ultradense WDM systems using the RZ-DPSK modulation format may be significantly enhanced by optimizing the duty cycle of the RZ pulses.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-10-01 |