100Gand Beyond:Trends in Ultrahigh-Speed Communications(Part II)

Gee-Kung Chang

Jianjun Yu

T his is the second part of a specialissue on“100G and Beyond:Trends in Ultrahigh-speed Communications.”The first part of this special issue contained nine papers written by service providers,telecommunications equipment manufacturers,and top universities and research institutes.This special issue includes comprehensive reviews as well as original technical contributions covering the rapid advances and broad scope of ultrahigh-speed technologies in optical fiber communications.All papers in this issue have been invited.After peer review,five papers were selected to be published.We hope this issue serves as a timely and high-quality networking forum for scientists and engineers.The first paper,“FSK Modulation Scheme for High-Speed Optical Transmission,”by Nan Chiet al.from Fudan University,describes the generation,detection,and performance of frequency-shift keying(FSK)for high-speed opticaltransmission and label switching.

The second paper,“Computationally Efficient Nonlinearity Compensation for Coherent Fiber-Optic System,”by Liet al.from the University of Central Florida,describes how split-step digital backward propagation(DBP)can be combined with coherent detection to compensation for fiber nonlinear impairments.

The third paper,“Flipped-Exponential Nyquist Pulse Technique to Optimize the PAPRin Optical Direct Detection OFDM System,”by Xiao et al.from Hunan University,describes the use of advanced coding to reduce peak-to-average power ratio of the OFDM signal and extend the transmission distance.

The fourth paper,“100Gb/s Nyquist-WDM PDM-16QAM Transmission over 1200-km SMF-28 with Ultrahigh Spectrum Efficiency,”by Dong et al.from ZTEUSA,describes the use of pre-and post-equalization to improve transmission system performance and realize ultrahigh spectrum efficiency.The fifth paper,“Field Transmission of 100G and Beyond:Multiple Baud Rates and Mixed Line Rates Using Nyquist-WDM Technology,”by Jia et al.from ZTEUSA,describes a field trial experiment of mixed 100G,400G,and 1 Tbit/s signaltransmission.Joint experiments between ZTE and Deutsche Telecom(DT)have been conducted on long-haultransmission of 100G and beyond over standard single-mode fiber(SSMF)and inline EDFA-only amplification.

We would like to thank all authors for their valuable contributions and allthe reviewers for their timely and constructive feedback on all submitted papers.We hope that the contents of this issue are informative and useful for all readers.

Biographie

Gee-Kung Changreceived his PhD degree in physics from the University of California,Riverside.He worked for 23 years at Telcordia Technologies(formerly Bell Systems-Bell Labs,and then Bellcore),where he held research and management positions,including director and chief scientist of optical internet research,director of optical networking systems and testbed,and director of optical system integration and network interoperability.Prior to joining Georgia Institute of Technology,he was vice president and chief technology strategist at Op Next Inc.,an offshoot of HitachiTelecom.Dr.Chang is currently the Byers endowed chair professor of optical networking at the Schoolof Electrical and Computer Engineering,Georgia Institute of Technology.He is an eminent scholar of the Georgia Research Alliance.He is also co-director of the 100G Optical Networking Center at Georgia Tech.He holds 56 U.S.patents and has co-authored more than 360 peer-reviewed journaland conference papers.He was made a Telcordia Fellow in 1999 for pioneering work in the optical networking project,MONET,and NGI.He was made a fellow of the Photonic Society of Chinese-Americans in 2000.He is a fellow of the IEEEPhotonics Society and a fellow of the Optical Society of America,recognized for his contributions to DWDM optical networking and label switching technologies.He has served at many IEEELEOSand OSA conferences.He has been the lead guest editor for three specialissues of the Journal of Lightwave Technology,which is sponsored by IEEELEOSand OSA.

Jianjun Yureceived 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 technicalstaff at Lucent Technologies and Agere Systems,Murray Hill,NJ.He joined the 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 technical staff at NEC Laboratories America,Princeton,NJ.Currently,he works for ZTECorporation as the chief scientist on high-speed opticaltransmission and director of optics labs in North America.He is also a chair professor at Fudan University and adjunct professor and PhD supervisor at the Georgia Institute of Technology,Beijing University of Posts and Telecommunications,and Hunan University.He has authored more than 100 papers for prestigious journals and conferences.Dr.Yu holds 8 U.S.patents with 30 others pending.He 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 Journalof Lightwave Technology and Journal of Optical Communications and Networking.Dr.Yu was a technical committee member at IEEELEOSfrom 2005 to 2007 and a technical committee member of OFC from 2009 to 2011.