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Intra-channel XPM compensation is proposed for reduced-complexity back-propagation. By optimizing the number of intra-channel sub-bands, single-stage back-propagation is demonstrated on a 3,400 km straight-line NZ-DSF link. A trade-off between complexity and performance is analyzed.
Pulse compression technique based on fiber nonlinearity and dispersion is discussed, where we focus on comb-like profiled fiber (CPF). CPF is a practical pulse compressor owing to its systematic and flexible compression design scheme.
We developed polarization-maintaining comb-like profiled fiber (CPF) for the first time. Extinction ratio of 20 dB was achieved in a whole length of fabricated 4-step CPF. 10 GHz repeating, 2.4 ps pulse train was successfully compressed to 0.9 ps.
We show analytically and numerically that a stationary rescaled pulse (SRP) can exist in a dispersion decreasing fiber with a linearly decreasing dispersion profile. By using the SRP, we demonstrate extremely pedestal-free pulse compression.
We develop a hole-assisted fiber with large anomalous dispersion and low macro-bending loss to realize compact module of CPF pulse compressor. Using the fabricated module, we demonstrate C-band wavelength-tunable pulse compression for 40 GHz pulse train
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