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麻烦有下载权限的斑斑下载下，谢谢！ 100Gb/s transmission system implementation and optimization (Invited Paper) Paper 7136-62

Author(s): Chao Lu, Zhaohui Li, Wenghong Chung, Y. F. Yang, L. H. Cheng, The Hong Kong Polytechnic Univ. (Hong Kong China); Xiaogeng Xu, Huawei Technologies Co., Ltd. (China); Hwa-Yaw Tam, Ping-Kong A. Wai, The Hong Kong Polytechnic Univ. (Hong Kong China); Q. J. Xiong, Huawei Technologies Co., Ltd. (China) Show Abstract Hide Abstract Based on the anticipated 100G Ethernet requirements, 100 Gbps and higher data rate of serial data transmission per wavelength is needed. To achieve this data rate while complying with current system design specifications such as channel spacing, dispersion and PMD tolerance, multilevel modulation formats with more than 1 bit per symbol have to be used. At the same time, the system should be fully compatible with current transmission link design including link span, fibre type and amplifiers used. Various modulation schemes such as 100Gbaud on/off keying (OOK), single polarization 50Gbaud/s differential quadrature phase shift keying (DQPSK) signals, polarization multiplexing DQPSK at 25Gbaud rate, orthogonal frequency-division multiplexing (OFDM) and even higher multi-level modulation have been studied and demonstrated for 100Gb/s implementation. OOK is limited by high speed electronic components and the spectrum efficiency of this modulation is too low. Polarization multiplexing can be used to double the data rate by transmitting two orthogonally polarized symbols simultaneously. When it is used with DQPSK, 3bit/symbol can be realized. However, polarization tracking at the receiver can be challenging for direct detected system. Polarization multiplexed DQPSK with coherent detection has shown much promise since electronic signal processing can improve system performance significantly. However, high speed analog-to-digital converter (ADC) is required. The realtime implementation of transmitter and receiver of OFDM and high multi-level modulation at the 100Gb/s data rate can be challenging using currently available electronic technology due to the requirement for real time implementation of the IFFT and FFT. In this talk, we discuss our recent effort in successful generation, transmission and detection of single polarization 100Gb/s carrier-suppressed return-to-zero (CS-RZ) differential quadrature phase shift keying (CS-RZ DQPSK) signals. Based on EDFA only, error free transmission of more than 500km single mode fiber (SMF) of 8×100Gb/s CS-RZ DQPSK with channel spacing of 200 GHz and span length of 80 or 100 km, has been achieved. Implementation of key system components enabling the successful demonstration is highlighted.