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A world record capacity 118.5 Tbit/s transmission through optical fiber with a 125 micron cladding diameter was achieved using a low loss and 316 km-long full space division multiplexing link incorporating multiple vendor technologies.
This paper evaluates the Q-factor improvement by maximum ratio combining for optical diversity transmission signals under the condition of the parametric process due to the Kerr effect and group-velocity dispersion.
We investigate long-haul WDM transmission using 538Gb/s PDM-64QAM single-carrier frequency-division-multiplexing (SC-FDM) signal with pilot tone. Assuming 20% FEC overhead, the longest transmission distance of 1200km at the spectral efficiency of 8.96b/s/Hz is achieved.
We demonstrate 102.3 Tb/s transmission over 3×80 km of PSCF by employing 548-Gb/s PDM-64QAM single-carrier frequency-division-multiplexing (SC-FDM) signals with pilot tone and 11.2-THz ultra-wideband low-noise amplification in the C- and extended L-bands.
We propose a simple multi-degree ROADM architecture based on a massive port count WSS with integrated colorless ports. We create a simple multi-ring network and demonstrate the multi-degree colorless ROADM.
Frequency-domain equalization (FDE) has been attracting much attention for high-speed long-haul transmission over fiber-optic channels. Two FDE configurations for coherent optical transmission are presented and some applications are also described.
Dispersion compensation fiber is one of the causes of transmission delay in optical systems. We demonstrate a low-latency model system employing electronic pre-equalization. The pre-equalization technology saves 1.145 ms of latency over 3,900 km.
We demonstrate 45.2Tb/s 50-GHz-spaced WDM transmission over 240km (3 × 80km) in C-band using 538 Gb/s PDM-64QAM single-carrier frequency-division-multiplexed (SC-FDM) signal with digital pilot tone. Nonlinear tolerance is enhanced at spectral efficiency of 10b/s/Hz.
Electronic pre-equalization of chromatic dispersion for 43 Gb/s DQPSK has been demonstrated employing a developed test chip. The chip enables the BER in fibre with 2450 ps/nm of dispersion to be improved to 7.6E-05 without an optical dispersion compensator.
We demonstrate 25-GHz-spaced eleven-channel 171 Gb/s PDM 16-QAM transmission over 1440 km. 16-QAM signals were generated by high-speed digital-to-analog converters. We achieved a record spectral efficiency-distance product of 9216 b/s/Hz-km (6.4 b/s/Hz × 1440 km) in the 16-QAM format.
Experimental performance evaluation of SPM compensation and its application in optical transport network is introduced. Experimental results show transmission distances of 100 Gbps signal reaches 16,340 and 12,015 km in single-channel and 10-ch WDM conditions respectively.
10 Gbps DPSK electronic pre-equalization transmission was demonstrated over 500 km of 8,170 ps/nm SMF in the laboratory and over 360 km of field-installed SMF without any optical dispersion compensation.
We demonstrate 160-Gb/s PDM 16-QAM single channel transmission over the longest distance yet to be reported, of 3123.9 km. The coherent receiver employs a frequency offset compensator based on a digital PLL.
We demonstrate the record total capacity of 69.1 Tb/s with a spectral efficiency of 6.4 b/s/Hz by employing 21.4-Gbaud 16-QAM modulation, blind digital coherent detection, and 10.8-THz ultra-wideband amplification in the C- and extended L-bands.
We propose and experimentally demonstrate optical path aggregation in a spectrum-sliced elastic optical path network (SLICE). Multiple optical orthogonal frequency-division-multiplexed (OFDM) 100-Gb/s optical paths are aggregated in the optical domain to form a spectrally continuous 1-Tb/s super-wavelength optical path and transmitted over a network of bandwidth-variable wavelength cross-connects...
We have demonstrated a 100-Gb/s single channel transmission over the longest distance of 6,000 km ever reported using 2-subcarrier no-guard-interval PDM CO-OFDM. The unique DSP technology enabled to compensate for CD up to 109,200 ps/nm.
We propose two-stage overlap frequency domain equalization (OFDE) to compensate chromatic dispersion and polarization mode dispersion in practical long-haul optical systems. This paper evaluates the performance of 25-Gb/s coherent optical single-carrier transmission using two-stage OFDE.
We demonstrate the record capacity-distance product of 48.2 Petabit/s.km by using 111-Gb/s no-guard-interval coherent OFDM with 2-b/s/Hz spectral efficiency.
We demonstrated 25-Gb/s (21.7-Gb/s after coding) single-carrier (SC) transmission with QPSK format over 240 km of SMF (4080 ps/nm) by employing frequency-domain equalization (FDE).
We demonstrated spectrally efficient (2-b/s/Hz) 1Tb/s DWDM transmission of 111 Gb/s no-guard-interval PDM CO-OFDM signals over DSFs with 50 GHz spacing. The record transmission distance of 2100 km in the 100-Gb/s-data-rate CO-OFDM systems was achieved.
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