10 Gbit/s data modulation using 1.3 /spl mu/m InGaAs quantum dot lasers

Error-free 8 and 10 Gbit/s data modulation with quantum dot lasers emitting at 1.3 /spl mu/m is presented. 12 Gbit/s open eye patterns are observed. An integrated fibre-optic QD laser module yields error-free data modulation at 10 Gbit/s at a receiver power of -2 dBm.     

10Gbit/s并行光收发模块在万兆以太网的应用

介绍了万兆以太网技术（10 gigabit ethernet technology) . 万兆以太网使用以太网结构实现10Gbit/s点对点传输，距离可达到40km，使以太网的应用从局域网扩展到城域网和广域网. 重点介绍了万兆以太网的功能结构、分层结构、物理传输介质和甚短距离（very short reach）网络传输的并行光传输系统在万兆以太网方面的应用.     

25 Gbit/s无源光网络技术进展和实验研究

高清视频、虚拟现实等新业务的产生以及PON传输5G移动前传和回传信号的需求,要求PON能支持单波超过10 Gbit/s速率的传输.当线路速率超出10 Gbit/s时,色散和功率预算成为限制系统性能的主要因素.介绍了25 Gbit/s PON系统的研究进展和存在的问题,并对采用基于零色散附近的25 Gbit/s速率的EML、分别基于25 Gbit/s和10 Gbit/s速率的APD接收机进行了实验研究.实验结果表明,采用25 Gbit/s速率的APD,EML的发射光功率设置为+5 dBm,在没有光放大器的情况下,可以达到10 Gbit/s对称的吉比特无源光网络的32 dBm的N2级别的光功率预算.     

1.6 Tbit/s(40×40 Gbit/s)光通信传输系统

在国家自然科学基金网(NSFCNet)上已实现由400 km×10 Gbit/s传输链路直接升级的一路400 km×40 Gbit/s光传输实验的基础上,采用自行研制的40×40 Gbit/s载波抑制归零(CS-RZ)码多波长光发送源,进行了160 km的1.6 Tbit/s(40×40 Gbit/s)波分复用(WDM)光传输实验。实验结果表明,对于常规中短距离10 Gbit/s传输链路可以直接升级至40 Gbit/s。但是由于40 Gbit/s传输系统的色散容限小于60 ps/nm,而且传输光纤与色散补偿模块的色散斜率不匹配,要实现40通道40 Gbit/s的传输,必须对40个信道分别进行精细的色散补偿。这也说明,对于宽带的40 Gbit/s多波长系统,有必要优化设计或更新传输链路。     

10Gbit/s SFP+光收发模块

文章报道一种10 Gbit/s SFP+(加强型小型化可热插拔)光收发模块.该模块由TOSA(光发送子系统)、ROSA(光接收子系统)和控制电路组成,实现了SFP+的智能化控制和模块状态监测功能.依照SFF-8431(多源协议)对该模块进行了测试,结果表明,该模块满足10 Gbit/s以太网的应用要求,且最高可支持11.3 Gbit/s的速率.     

10 Gbit/s, 1.56 mu m multiquantum well InP/InGaAsP Mach-Zehnder optical modulator

10 Gbit/s modulation using a III-V semiconductor Mach-Zehnder interferometer is reported for the first time. The modulator has a -3 dB bandwidth in excess of 15 GHz and is operated in a push-pull drive configuration with only 2 V peak to peak. 10 Gbit/s nonreturn to zero format eye diagrams with an extinction ratio>10 dB are demonstrated.<>     

All-Optical 10 and 40 Gbit/s RZ-to-NRZ Format and Wavelength Conversion Using Semiconductor Optical Amplifiers

We demonstrate that the cross-gain compression (XGC) in a semiconductor optical amplifier can produce effective return to zero (RZ)-to-nonreturn to zero (NRZ) format conversion. This technique is experimentally investigated at 10 and 40 Gbit/s. At 10 Gbit/s, the format adaptation allows for a very high pulsewidth increase, i.e., from 10 to 100 ps. The output 10 Gbit/s NRZ signal is transmitted on metro-like links with no chromatic dispersion compensation.      

40Gbit/s DWDM系统光路调度试验及OLP试验总结

随着40Gbit/s路由器的正式商用,中国电信从2009年中开始大规模建设单波速率40Gbit/s的高速率波分系统。40Gbit/s系统较10Gbit/s系统,有着更严格的色散要求,40Gbit/s系统除了要求固定色散补偿模块配置准确外,还在OTU上配置了色散可调模块TDC（Tunable Dispersion Compensator）,进行色散精确调整。由于TDC在全局搜索时,会引起业务的较长时间中断,因此40Gbit/s系统的业务恢复与10Gbit/s系统有较大的区别。本文就40Gbit/s波分系统的调度及OLP保护对业务的影响进行了探讨。     

High performance 10-12.5 Gbit/s modulator driver in InP SHBT technology

A high performance modulator driver circuit is presented using 4" InP SHBT technology. The IC was developed for driving EAM modulators in OC-192 (10 Gbit/s) and with forward error correction (FEC: 10.7 Gbit/s or 12.5 Gbit/s) optical fibre systems. The monolithic integrated circuit features output amplitude control, output crossing point control and output DC offset control. Measured results show the circuit operates at 10 to 12.5 Gbit/s with a swing of 3.1 V/sub p-p/ at each output and 20/18 ps rise/fall times. The power dissipation is 1.4 W with a standard power supply of -5.2 V.     

Optimum parameter guidelines for 10 Gbit/s, multi-megametre transmission systems considering the nonlinear effect

The impact of the nonlinear effect, combined with group velocity dispersion, on cascaded amplifier transmission systems is clarified experimentally using a 10 Gbit/s transmission system. Based on the results, the optimum amplifier output power is presented as a function of amplifier spacing 3000 km transmission is feasible at 10 Gbit/s if the spacing is 100 km.<>     

用于10Gbit／sSDH光传输系统的光接收机

本文介绍了一种用于１０Ｇｂｉｔ／ｓＳＤＨ光传输系统的光接收机。该接收机的光接口指标可满足ＩＴＵ－ＴＧ．ＳＣＳ建议的要求。已将该接收机用于１０Ｇｂｉｔ／ｓ光纤传输实验。     

Demonstration of 10 Gbit Ethernet/Optical-Packet Converter for IP Over Optical Packet Switching Network

We developed novel network interfaces, for example 10 Gbit Ethernet to 80 Gbit/s optical-packet (10 GbitE–80 GbitOP) or 80 Gbit/s optical-packet to 10 Gbit Ethernet (80 GbitOP–10 GbitE) converters (collectively called as 10 GbitE/80 GbitOP converters), to connect optical packet switching (OPS) networks with IP technology-based networks. By using newly developed arrayed burst-mode optical packet transmitters/receivers together, the 10 GbitE–80 GbitOP converter at the ingress edge node of the OPS network encapsulates an IP packet into an $80(8lambdatimes 10) {rm Gbit/s}$ dense wavelength division multiplexing (DWDM)-based optical packets and generates an optical label based on a lookup table and the destination addresses of the IP packet. The 80 GbitOP–10 GbitE converter at the egress edge node decapsulates the IP packet from the optical packet and generates a 10 GbitE frame accommodating the IP packet according to a lookup table. By using these network interface devices and OPS system based on multiple optical label processing, we achieved, for the first time, 74-km single-mode fiber transmission, switching, and buffering of $80(8lambdatimes 10) {rm Gbit/s}$ DWDM-based optical packets encapsulating almost 10 Gbit/s IP packets with error-free operation (IP packet loss rate $≪ 10^{-6}$).      

High-sensitivity and wide-dynamic-range 10 Gbit/s APD/preamplifieroptical receiver module

InAlAs avalanche photodiodes (APD) and SiGe-HBT preamplifier 10 Gbit/s optical receiver modules have been developed. The measured back-to-back minimum sensitivity and the optical overload with a pseudorandom binary sequence of 2³¹ - 1 at a bit error rate of 10^-9 are -29.5 and +0.4 dBm, respectively. The dynamic range is 29.9 dB. These results show the highest sensitivity and the widest dynamic range yet reported for 10 Gbit/s APD receivers     

Distance limits of 10 to 20 Gbit/s FSK transmission on standardfibre

A simple analysis is performed on an FSK transmission system using a high FM efficiency, high bandwidth DFB laser as a simple DFB transmitter and an FM/AM converter as an optical signal processor. It shows that optimum optical processing pushes the transmission limits to 150 km at 10 Gbit/s and to 40 km at 20 Gbit/s     

300脚MSA 10 Gbit/s Transponder模块

分析了开发10Gbit/sTransponder模块的必然性，介绍了10Gbit/sTransponder模块的原理、特点和参数指标。并且用开发出的两只40km300脚10Gbit/sTransponder模块成功地进行了43km的无误码传输试验和测试。     

10‐Gbit/s Wireless Communication System at 300 GHz

A 10‐Gbit/s wireless communication system operating at a carrier frequency of 300 GHz is presented. The modulation scheme is amplitude shift keying in incoherent mode with a high intermediate frequency (IF) of 30 GHz and a bandwidth of 20 GHz for transmitting a 10‐Gbit/s baseband (BB) data signal. A single sideband transmission is implemented using a waveguide‐tapered 270‐GHz highpass filter with a lower sideband rejection of around 60 dB. This paper presents an all‐electronic design of a terahertz communication system, including the major modules of the BB and IF band as well as the RF modules. The wireless link shows that, aided by a clock and data recovery circuit, it can receive 2⁷?1 pseudorandom binary sequence data without error at up to 10 Gbit/s for over 1.2 m using collimating lenses, where the transmitted power is 10 μW.     

High performance 10 Gbit/s pin-FET optical receiver

An optical receiver suitable for a 10 Gbit/s direct detection optical transmission system is described. It uses a pin diode, commercial GaAs MESFETs and hybrid construction techniques on a coplanar substrate. The measured sensitivity of the receiver is -20.4 dBm, which is the best reported sensitivity at 10 Gbit/s for a pin-FET optical receiver to date.<>     

40 Gbit/s WDM系统在长途骨干网中的应用

随着业务的爆炸式增长,40 Gbit/s WDM(波分复用)系统已经在现有骨干网中大规模商用。文章分析了40 Gbit/s系统工程建设中的相关问题,包括40 Gbit/s系统的光纤选型、编码选择、40 Gbit/s系统中10 Gbit/s业务的解决方案、40 Gbit/s系统的OLP(光线路保护)和客户端解决方案。     

640 Gbit/s (64-Wavelength $,times,$10 Gbit/s) Data-Rate Wide-Colored NRZ-DPSK Optical Packet Switching and Buffering Demonstration

We demonstrated optical packet switching and buffering operation of a DWDM/NRZ-DPSK optical packet, whose payload-data-rate is 640 Gbit/s (64-wavelength$,times,$10 Gbit/s), for transparent optical packet switch systems for the first time. Error-free (bit-error-rate ${≪}10^{- 9}$) operation including 200-Gchip/s PSK optical label processing was achieved for all 64-wavelength-channel 10 Gbit/s DPSK packet-payloads. In addition, the higher tolerance of DPSK format for packet power fluctuation compared with OOK one was verified in an optical packet switch system.      

ESD protection for 10 Gbit/s optical receivers

The ESD protection of high-speed RF ICs used in 10 Gbit/s optical receivers with InGaP heterojunction bipolar transistor (HBT) technology is presented. The frequency response of a 10 Gbit/s optical receiver with ESD protection is directly measured. The results indicate that the new ESD circuit can effectively protect input/output pins while with negligible loading effect.