1 Tbit/s km transmission experiment at 16 Gbit/s using conventional fibre

Describes a single-channel optical transmission experiment that achieved a bit rate-distance product of 1 Tbit/s km over conventional (non-dispersion-shifted) fibre. The transmitter was a directly modulated, 1.3 mu m-wavelength, distributed feedback laser. The receiver employed a semiconductor optical preamplifier and a high-impedance pinHEMT front-end.<>     

1.6 Tbit/s (40 × 42.7 Gbit/s) WDM transmission over 2400 kmof fibre with 100 km dispersion-managed spans

Transmission of 40 × 42.7 Gbit/s WDM channels is demonstrated over 2400 km of fibre with 100 km amplifier spacing and 100 GHz channel spacing. Dispersion-managed fibre spans, carrier-suppressed return-to-zero modulation format and hybrid Raman/erbium-doped fibre inline amplifiers were employed to achieve a record 40 Gbit/s, WDM transmission distance with 100 km terrestrial span lengths     

640 Gbit/s (32×20 Gbit/s) WDM transmission with 0.4(bit/s)/Hz spectral efficiency using short-period dispersion-managedfibre

640 Gbit/s (32 channel×20 Gbit/s) WDM transmission with 0.4 (bit/s)/Hz spectral efficiency is demonstrated using short-period dispersion-managed fibre (Perfect Cable^TM). The average Q-factor was measured to be better than 18 dB after transmission over 280 km     

1.28 Tbit/s (32×40 Gbit/s) WDM transmission over 2400 km ofTeraLightTM/Reverse TeraLight(C) fibres using distributedall-Raman amplification

1.28 Tbit/s capacity transmission of 32×40 Gbit/s, 100 GHz-spaced channels is demonstrated over 2400 km using distributed all-Raman amplification and electrical-TDM equipment over an optimised TeraLight^TM/Reverse TeraLight(C) dispersion map     

Tbit/s级波分复用光传输及其关键技术分析

总结了Tbit/s级WDM光传输的最新进展,评价了各自的优缺点,对实现Tbit/s级WDM光纤通信的各种关键技术做了分析。     

1.7 Tbit/s (85/spl times/22.8 Gbit/s) transmission over 9180 km using symmetrically collided transmission methodology

1.7 Tbit/s (85/spl times/22.8 Gbit/s) transmission over a transpacific distance of 9180 km using distributed Raman amplifiers followed by 35 nm C-band erbium-doped fibre amplifiers is demonstrated. A symmetrically collided transmission methodology mitigates unwanted waveform distortion caused by cross-phase modulation.     

20 Gbit/s soliton transmission over 19 Mm using sliding-frequencyguiding filters

20 Gbit/s time-polarisation multiplexed solitons have been transmitted over 19 Mm in a recirculating loop with a 35 km amplification span using the sliding-frequency guiding filter soliton control technique. Soliton energy and sliding rate margin measurements are reported for 10 Mm     

1 Tbit/s (111 Gbit/s/ch X 10 ch) no-guard-interval CO-OFDM transmission over 2100 km DSF

Spectrally efficient (2bit/s/Hz) 1 Tbit/s DWDM transmission of 111 Gbit/s no-guard-interval PDM CO-OFDM signals with 50 GHz spacing over DSF is demonstrated. The record transmission distance of 2100 km was achieved for a 100 Gbit/s-data-rate CO-OFDM system.     

109 km transmission experiment at 20 Gbit/s with directly modulatedDFB V-on-U groove (VUG) laser

Transmission over 109 km of dispersion shifted fibre is successfully accomplished without penalty and errors at 20 Gbit/s rate using a 10 well 1.5 μm high-speed MQW DFB laser biased at 24 mA DC with a low modulation voltage swing of 1.5 V peak to peak     

2 Tbit/s (200×10 Gbit/s) over 9240 km transmission experimentwith 0.15 nm channel spacing using VSB format

2 Tbit/s (200 WDM×10 Gbit/s) transmission over 9240 km using only a C-band erbium-doped fibre amplifier is demonstrated. A vestigial sideband modulation scheme was adopted to realise 0.15 nm channel separation. Ultra-high spectral efficiency of 53% was achieved. All channels showed better than 9 dB Q-factor, which can be corrected to less than 10^-9 BER after OSW Super forward error correction     

3711 km, 4×2.5 Gbit/s WDM transmission over installed RIOJAsubmarine cable system

WDM transmission over a 3711 km installed optically amplified submarine cable system is reported. They also show the implication of varying the repeater output power by means of a proprietary supervisory system resulting in optimised system performance     

Multi Gbit/s bit parallel WDM transmission using dispersion managedfibers

This paper demonstrates the feasibility of a bit parallel WDM (BP-WDM) system using dispersion managed fibers. An expression for the total bit skew as a function of the fiber dispersion and system bandwidth is derived and compared with experimental results. A 4 bit×10 Gbit/s-per bit BP-WDM transmission experiment over 30 km DMF is used and an aggregate bite rate×distance product of 1.2 Tbit/s-km is obtained. The total bit skew of the system is reduced to one half of the bit period. We believe that systems using BPWDM will be useful for computer interconnects in high-speed parallel systems and ring networks     

40GWDM关键指标及技术解决方案

结合40G WDM技术在省际干线上应用情况,简要分析了YD/T1991-2009标准中的OSNR及BER等主要技术指标,提出并分析了阿尔卡特朗讯在40G WDM方面的主要技术解决方案     

Tbit/s switching scheme for ATM/WDM networks

A new high capacity, reservation-based switch architecture for ATM/WDM networks is presented. The scheme is contention-free and highly flexible yielding a powerful solution for high-speed broadband packet-switched networks. Switching management and control are studied for data rates of up to 10 Gbit/s/port, providing and aggregated throughput of over 1 Tbit/s     

100Gbit/s WDM传输系统中PMD抑制方法的研究

随着WDM(波分复用)技术的快速发展,100Gbit/s速率的通信系统即将投入商用,通信光纤中的PMD(偏振模色散)的影响愈加突出。文章在阐述PMD形成原因及抑制PMD必要性的基础上,介绍了6种抑制PMD的方案并对其分类和应用原理进行分析研究,指出了PMD补偿、新型的稳定调制码型和FEC(前向纠错)编码等3种方案在技术上具备良好的应用前景。     

1.5 Tbit/s (75/spl times/20 Gbit/s) DWDM transmission using Er/sup 3+/-doped tellurite fibre amplifiers with 63 nm continuous signal band

63 nm continuous signal band of a 1.5 Tbit/s (75/spl times/20 Gbit/s) dense wavelength division multiplexed transmission over 200 km was demonstrated by applying Er/sup 3+/-doped tellurite fibre amplifiers.     

1.4 Gbit/s optical DPSK heterodyne transmission system experiment

The authors report the performance of a 1.4 Gbit/s differential phase shift keying (DPSK) coherent fibre system experiment using a balanced receiver. They show that the detection sensitivity as a function of local oscillator power follows the same functional dependence as the theoretical prediction     

Capacity-enhanced coarse WDM transmission using 10 Gbit/s sources and DWDM overlay

Three different techniques to increase the transmission capacity of coarse WDM metro-access systems to 100 Gbit/s and upgrade selected channels to 10 Gbit/s operation without sacrificing distance are presented. The transmission performance of all channels is investigated and the impact of system parameters is analysed.     

Dispersion compensated 80 Gbit/s WDM transmission over 1171 kmstandard singlemode fibre

WDM transmission experiment at 80 Gbit/s (8×10 Gbit/s, 0.8 nm channel spacing) over 1171 km of standard singlemode fibre has been performed with a 90.1 km recirculating loop incorporating a dispersion compensation fibre and gain-equalising optical bandpass filters     

Optical time-division multiplexed transmission system experiment at 8 Gbit/s

We describe the design and performance of an experimental two-channel optical time-division multiplexed fibre transmission system operating at a wavelength of 1.3 ?m and a bit rate of 8 Gbit/s. Transmission over 8 km of single-mode fibre with low crosstalk and transmission error rates as low as 10?10 is demonstrated.