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We demonstrate a new method for wideband dispersion characterization of highly nonlinear fibers with very low dispersion. The new method uses a wideband supercontinuum source and a balanced Mach–Zehnder interferometer architecture. The new dispersion reconstruction algorithm allowed dispersive measurement accuracy of 0.05 ps/km-nm over a 700-nm spectral band for standard (sloped) highly nonlinear...
We present new insights into partial response amplitude modulation and direct detection. An 80% spectral tightening of the transmitted signal is demonstrated, while suffering only 3dB of penalty with respect to the regular non-coherent systems, as well as 2 bit/s-Hz long-haul transmission.
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