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ZTE Communications ›› 2012, Vol. 10 ›› Issue (3): 28-38.

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Field Transmission of 100G and Beyond: Multiple Baud Rates and Mixed Line Rates Using Nyquist-WDM Technology

Zhensheng Jia, Jianjun Yu, Hung-Chang Chien, Ze Dong, and Di Huo   

  1. ZTE USA, Morristown, NJ 07960, USA
  • 收稿日期:2012-03-31 出版日期:2012-09-25 发布日期:2012-09-25
  • 作者简介:Zhensheng Jia (zhensheng.jia@zteusa.com) received his BE and MSE degrees in physical electronics and optoelectronics from Tsinghua University, Beijing, in 1999 and 2002. He received his PhD degree from Georgia Institute of Technology, Atlanta, in 2002. From 2002 to 2004, he researched ultralong-haul optical links and backbone networks at China Telecom Beijing Research Institute. From 2008 to 2011, he was a senior research scientist at Telcordia Technologies and worked on the architecture of core optical networks and RF photonic signal processing. Currently, he works at the Optical Labs of ZTE USA and researches ultralong-haul optical transmission system and optical transport architecture. Dr. Jia has authored or co-authored more than 100 peer-reviewed journal articles and conference papers. He is an active reviewer for many technical publications. He was one a recipient of the 2007 IEEE/LEOS Graduate Students Fellowship Award and the 2008 PSC Bor-Uei Chen Memorial Scholarship Award. In 2011, he also received the Telcordia CEO Award.

    Jianjun Yu received his PhD degree in electrical engineering from Beijing University of Posts and Telecommunications in 1999. From June 1999 to January 2001, he was an assistant research professor at the Research Center COM, Technical University of Denmark. From February 2001 to December 2002, he was a member of the technical staff at Lucent Technologies and Agere Systems, Murray Hill, NJ. He joined Georgia Institute of Technology in January 2003 as a research faculty member and director of the Optical Network Laboratory. From November 2005 to February 2010, he was a senior member of the technical staff at NEC Laboratories America, Princeton, NJ. He is currently the chief scientist on high-speed optical transmission and director of ZTE Optics Labs North America. He is a chair professor at Fudan University and adjunct professor and PhD supervisor at Georgia Institute of Technology, Beijing University of Posts and Telecommunications, and Hunan University. He has authored more than 200 papers for prestigious journals and conferences. Dr. Yu holds 11 US patents with 30 others pending. Dr. Yu is a fellow of the Optical Society of America. He is editor-in-chief of Recent Patents on Engineering and an associate editor for the Journal of Lightwave Technology and Journal of Optical Communications and Networking. Dr. Yu was a technical committee member at IEEE LEOS from 2005 to 2007 and a technical committee member of OFC from 2009 to 2011.

    Hung-Chang Chien received his BSc and MSc degrees in electrical engineering from National Cheng Cheng University, Taiwan, in 1999 and 2001. He received his PhD degree in electro-optical engineering from National Chiao Tung University, Taiwan, in 2006. From 2007 to 2011, he was a research engineer in the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta. He is currently a senior member of technical staff at ZTE Optics Labs North America, Morristown, NJ. Dr. Chien has authored and co-authored more than 100 journal papers and conference proceedings. He holds one US patent with nine others pending in the fields of coherent DWDM optical transmission, microwave photonics, and passive optical networks.

    Ze Dong received his BSc degree in electronic information science and technology from Hunan Normal University in 2006. He received his PhD degree in electrical engineering from Hunan University, China, in 2011. From 2010 to 2011, he was a visiting scholar at Georgia Institute of Technology. He is currently a postdoctoral fellow in the School of Electrical and Computer Engineering, Georgia Institute of Technology. His research interests include broadband optical communication and optical coherent communications. Dr. Dong has authored or co-authored more than 35 journal papers and conference proceedings in prestigious journals.

    Di Huo has worked in telecommunications research and development for 20 years. He started with Mannesmann (Vodafone Arcor, Germany) and moved to Bell-Labs (Alcatel-Lucent, USA). He is now responsible for the forward-looking and international standard activities of ZTE. His research interests include physical layer (system, fiber, component), control plane (GMPLS), and network deployment (RSA, EON, field trials).

Field Transmission of 100G and Beyond: Multiple Baud Rates and Mixed Line Rates Using Nyquist-WDM Technology

Zhensheng Jia, Jianjun Yu, Hung-Chang Chien, Ze Dong, and Di Huo   

  1. ZTE USA, Morristown, NJ 07960, USA
  • Received:2012-03-31 Online:2012-09-25 Published:2012-09-25
  • About author:Zhensheng Jia (zhensheng.jia@zteusa.com) received his BE and MSE degrees in physical electronics and optoelectronics from Tsinghua University, Beijing, in 1999 and 2002. He received his PhD degree from Georgia Institute of Technology, Atlanta, in 2002. From 2002 to 2004, he researched ultralong-haul optical links and backbone networks at China Telecom Beijing Research Institute. From 2008 to 2011, he was a senior research scientist at Telcordia Technologies and worked on the architecture of core optical networks and RF photonic signal processing. Currently, he works at the Optical Labs of ZTE USA and researches ultralong-haul optical transmission system and optical transport architecture. Dr. Jia has authored or co-authored more than 100 peer-reviewed journal articles and conference papers. He is an active reviewer for many technical publications. He was one a recipient of the 2007 IEEE/LEOS Graduate Students Fellowship Award and the 2008 PSC Bor-Uei Chen Memorial Scholarship Award. In 2011, he also received the Telcordia CEO Award.

    Jianjun Yu received his PhD degree in electrical engineering from Beijing University of Posts and Telecommunications in 1999. From June 1999 to January 2001, he was an assistant research professor at the Research Center COM, Technical University of Denmark. From February 2001 to December 2002, he was a member of the technical staff at Lucent Technologies and Agere Systems, Murray Hill, NJ. He joined Georgia Institute of Technology in January 2003 as a research faculty member and director of the Optical Network Laboratory. From November 2005 to February 2010, he was a senior member of the technical staff at NEC Laboratories America, Princeton, NJ. He is currently the chief scientist on high-speed optical transmission and director of ZTE Optics Labs North America. He is a chair professor at Fudan University and adjunct professor and PhD supervisor at Georgia Institute of Technology, Beijing University of Posts and Telecommunications, and Hunan University. He has authored more than 200 papers for prestigious journals and conferences. Dr. Yu holds 11 US patents with 30 others pending. Dr. Yu is a fellow of the Optical Society of America. He is editor-in-chief of Recent Patents on Engineering and an associate editor for the Journal of Lightwave Technology and Journal of Optical Communications and Networking. Dr. Yu was a technical committee member at IEEE LEOS from 2005 to 2007 and a technical committee member of OFC from 2009 to 2011.

    Hung-Chang Chien received his BSc and MSc degrees in electrical engineering from National Cheng Cheng University, Taiwan, in 1999 and 2001. He received his PhD degree in electro-optical engineering from National Chiao Tung University, Taiwan, in 2006. From 2007 to 2011, he was a research engineer in the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta. He is currently a senior member of technical staff at ZTE Optics Labs North America, Morristown, NJ. Dr. Chien has authored and co-authored more than 100 journal papers and conference proceedings. He holds one US patent with nine others pending in the fields of coherent DWDM optical transmission, microwave photonics, and passive optical networks.

    Ze Dong received his BSc degree in electronic information science and technology from Hunan Normal University in 2006. He received his PhD degree in electrical engineering from Hunan University, China, in 2011. From 2010 to 2011, he was a visiting scholar at Georgia Institute of Technology. He is currently a postdoctoral fellow in the School of Electrical and Computer Engineering, Georgia Institute of Technology. His research interests include broadband optical communication and optical coherent communications. Dr. Dong has authored or co-authored more than 35 journal papers and conference proceedings in prestigious journals.

    Di Huo has worked in telecommunications research and development for 20 years. He started with Mannesmann (Vodafone Arcor, Germany) and moved to Bell-Labs (Alcatel-Lucent, USA). He is now responsible for the forward-looking and international standard activities of ZTE. His research interests include physical layer (system, fiber, component), control plane (GMPLS), and network deployment (RSA, EON, field trials).

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摘要： In this paper, we describe successful joint experiments with Deutsche Telecom on long-haul transmission of 100G and beyond over standard single mode fiber (SSMF) and with in-line EDFA-only amplification. The transmission link consists of 8 nodes and 950 km installed SSMF in DT’s optical infrastructure. Laboratory SSMF was added for extended optical reach. The first field experiment involved transmission of 8 × 216.8 Gbit/s Nyquist-WDM signals over 1750 km with 21.6 dB average loss per span. Each channel, modulated by a 54.2 Gbaud PDM-CSRZ-QPSK signal, is on a 50 GHz grid, which produces a net spectral efficiency (SE) of 4 bit/s/Hz. We also describe mixed-data-rate transmission coexisting with 1T, 400G, and 100G channels. The 400G channel uses four independent subcarriers modulated by 28 Gbaud PDM-QPSK signals. This yields a net SE of 4 bit/s/Hz, and 13 optically generated subcarriers from a single optical source are used in the 1T channel with 25 Gbaud PDM-QPSK modulation. The 100G signal uses real-time coherent PDM-QPSK transponder with 15% overhead of soft-decision forward-error correction (SD-FEC). The digital post filter and 1-bit maximum-likelihood sequence estimation (MLSE) are introduced at the receiver DSP to suppress noise, linear crosstalk, and filtering effects. Our results show that future 400G and 1T channels that use Nyquist WDM can transmit over long-haul distances with higher SE and using the same QPSK format.

关键词: coherent detection, field trial, coherent optical OFDM, Nyquist WDM, MLSE

Abstract: In this paper, we describe successful joint experiments with Deutsche Telecom on long-haul transmission of 100G and beyond over standard single mode fiber (SSMF) and with in-line EDFA-only amplification. The transmission link consists of 8 nodes and 950 km installed SSMF in DT’s optical infrastructure. Laboratory SSMF was added for extended optical reach. The first field experiment involved transmission of 8 × 216.8 Gbit/s Nyquist-WDM signals over 1750 km with 21.6 dB average loss per span. Each channel, modulated by a 54.2 Gbaud PDM-CSRZ-QPSK signal, is on a 50 GHz grid, which produces a net spectral efficiency (SE) of 4 bit/s/Hz. We also describe mixed-data-rate transmission coexisting with 1T, 400G, and 100G channels. The 400G channel uses four independent subcarriers modulated by 28 Gbaud PDM-QPSK signals. This yields a net SE of 4 bit/s/Hz, and 13 optically generated subcarriers from a single optical source are used in the 1T channel with 25 Gbaud PDM-QPSK modulation. The 100G signal uses real-time coherent PDM-QPSK transponder with 15% overhead of soft-decision forward-error correction (SD-FEC). The digital post filter and 1-bit maximum-likelihood sequence estimation (MLSE) are introduced at the receiver DSP to suppress noise, linear crosstalk, and filtering effects. Our results show that future 400G and 1T channels that use Nyquist WDM can transmit over long-haul distances with higher SE and using the same QPSK format.

Key words: coherent detection, field trial, coherent optical OFDM, Nyquist WDM, MLSE