89 research outputs found
All-optical phase-regenerative multicasting of 40 Gbit/s DPSK signal in a degenerate phase sensitive amplifier
We demonstrate all-optical 1-to-5 differential phase-shift keyed (DPSK) wavelength multicasting at 40 Gbit/s using a degenerate four-wave mixing (FWM) based phase sensitive amplifier (PSA). Phase regenerative properties are reported with a sensitivity improvement of more that 10 dB
Saturation effects in degenerate phase sensitive fiber optic parametric amplifiers
We experimentally study saturation effects in degenerate phase sensitive amplifiers, revealing and explaining a gain regime suitable for all-optical signal processing functions such as phase regeneration
Demonstration of a 9 LP-mode transmission fiber with low DMD and loss
We experimentally demonstrate a 9 LP-mode (15 spatial modes) fiber with low DMD, confirmed by both time of flight and S2 measurements. Low loss (~0.2dB/km) is verified by OTDR measurement of the individual mode groups
All-optical phase and amplitude regeneration properties of a 40 Gbit/s DPSK black-box phase sensitive amplifier
We experimentally study the pure amplitude and phase regeneration capabilities of a blackbox degenerate four wave mixing (FWM) based bit-rate-flexible phase sensitive amplifier (PSA) for a 40 Gbit/s differential phase-shift keyed (DPSK) signal
Low computational complexity mode division multiplexed OFDM transmission over 130 km of few mode fiber
We demonstrate 337.5-Gb/s MDM-8QAM-OFDM transmission over 130 km of FMF. This confirms that OFDM can significantly reduce the required DSP complexity to compensate for differential mode delay, a key step towards real-time MDM transmission
Silica-based highly nonlinear fibers with a high SBS threshold
Results on suppression of stimulated Brillouin scattering in highly nonlinear fibers with germanium-doped core as well as aluminum-doped core based on spooling the fiber with a linear strain gradient is presented
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