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We experimentally demonstrate Nyquist superchannel transmission of 447 Gb/s (8×55.97Gb/s) PDM-64QAM over single span of 160 km SSMF with backward Raman amplification. We achieve a record distance of unrepeatered transmission for the spectral efficiency (SE) as high as 8.95b/s/Hz.
We experimentally demonstrate Nyquist superchannel transmission of 515Gb/s (8×64.4Gb/s) PDM-128QAM over single span of 120 km SSMF, using backward Raman amplification at the receiver-side. We achieve a record distance of unrepeatered transmission for the spectral efficiency (SE) as high as 10.31b/s/Hz.
In this paper, we review optical switching experiments of Nyquist superchannel with flexible bit rate. The various switching data capacities of 40,100 and 400-Gb/s are achieved by employing adaptive multi-level or hybrid quadrature amplitude modulation (QAM) formats. We aggregate superchannels with enough guard bands for optical superchannel switching with slight error vector magnitude (EVM) penalty...
Enabled with different modulation formats, bit rate variable subband switching function are demonstrated on an optical Nyquist pulse shaping superchannel for dynamic networks.
We generate a 387.5Gb/s, 7.05b/s/Hz polarization division multiplexing (PDM) 16QAM Nyquist pulse shaping superchannel with single carrier frequency domain equalization (SCFDE). The BER for all subbands after 320km SSMF is lower than 1×10−3.
We experimentally demonstrate reconfigurable optical add-drop multiplexer functionality with less than 0.5-dB error vector magnitude penalty in a Nyquist superchannel system based on single carrier frequency domain equalization with polarization division multiplexing 16 QAM format.
Ultra-narrow linewidth, nonpolarizing guide-mode resonance filters with single and double common resonance wavelengths for both TE and TM polarization are designed. High reflection, more than 99.9% is obtained at every resonance wavelength, and FWHMs of TE- and TM-polarized lights are 0.008 and 0.215 nm, respectively.
We show by simulation that for chromatic dispersion compensation of RZ-OOK and DB signals, the performance of electronic equalization can be significantly enhanced with dual-vestigial-sideband filtering and joint equalization.
We present a concept of improving MLSE by diverse reception. Simulation results show CD tolerance of 42.7G NRZ-OOK system is 382 ps/nm at 3 dB OSNR penalty.
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