Ultra-wideband, long distance WDM demonstrationof1 Tbit/s (50 × 20 Gbit/s), 600 km transmission using 1550 and 1580 nmwavelength bands

High-capacity lightwave transmission experiments

“…4,15,17,24 The WDM experiments include Fujitsu, 2 NEC, 16 Bell Labs, 23,25,26 and NTT. 24 WDM with polarization multiplexing on a perchannel-basis was demonstrated by AT&T Bell Laboratories 3,14 and WDM plus OTDM was the basis of NTT experiments.…”

“…4,15,17,24 The WDM experiments include Fujitsu, 2 NEC, 16 Bell Labs, 23,25,26 and NTT. 24 WDM with polarization multiplexing on a perchannel-basis was demonstrated by AT&T Bell Laboratories 3,14 and WDM plus OTDM was the basis of NTT experiments. 4,15,17 These various experiments are described roughly in chronological order, with the first three experiments in 1996 being contemporaneous.…”

“…This led to four terabit/s experiments unlike the initial pioneering ones. Two of these exploited ultra-wide-band amplifiers (UWBA) 23,24 and two were based on WDM using 40-Gb/s line rates. 25,26 The Bell Labs experiment 23 utilized 100 channels with 10-Gb/s (231 -1 PRBS) line rates transmitted over four spans totaling 400 km of NZDF (Figure 7a).…”

“…The L-band penalties ranged between 1 and 2.6 dB. An NTT terabit-per-second experiment based on UWBA 24 transmitted 50 channels at 20 Gb/s per channel. The experimental diagram of the loop experiment and its straight-line equivalent is shown in Figure 9.…”

High-ratio Electro-optical Data Compression for Massive Accessing Networks Using AOM-based Ultrafast Pulse Shaping

“…Based on this technology, an optimal interface between high speed optical network backbones and low speed electronic accessing network is proposed with the potential of massive accessing, low cost, and high throughput.With recent advances in high-speed/high-throughput optical network backbones, data rates have reached from several hundred Gbit/s to more than 1 Tbit/s [1][2][3][4][5]. At the end-user side, however, low to moderate speeds are acceptable but the number of the end-users can be huge and, preferably, the existing electronic network units will remain in use, given the current prevalence of electronic communication networks.…”