Optical technologies and techniques for high bit rate fiber transmission. - Xiang Liu 018; Douglas M. Gill; Sethumadhavan Chandrasekhar (Bell Labs Tech. J., 2006)

40 Gb/s DBPSK and DQPSK formats for transparent 50 GHz DWDM transmission. - Sethumadhavan Chandrasekhar; Xiang Liu 018 (Bell Labs Tech. J., 2010)

Mitigation of fiber nonlinear impairments in polarization division multiplexed OFDM transmission. - Xiang Liu 018; Fred Buchali; Robert W. Tkach; Sethumadhavan Chandrasekhar (Bell Labs Tech. J., 2010)

Optical polarization mode dispersion compensators for high-speed optical communication systems. - Chongjin Xie; Dieter Werner; Herbert Haunstein; Robert M. Jopson; Sethumadhavan Chandrasekhar; Xiang Liu 018; Yan Shi; Siegfried Gronbach; Thomas Link; Konrad Czotscher (Bell Labs Tech. J., 2010)

Small-form-factor all-InP integrated laser vector modulator enables the generation and transmission of 256-Gb/s PDM-16QAM Modulation Format. - Sethumadhavan Chandrasekhar; Xiang Liu 018; Peter J. Winzer; Jesse E. Simsarian; R. A. Griffin (OFC/NFOEC, 2013)

224-Gb/s PDM-16-QAM modulator and receiver based on silicon photonic integrated circuits. - Po Dong; Xiang Liu 018; Sethumadhavan Chandrasekhar; Lawrence L. Buhl; Ricardo Aroca; Yves Baeyens; Young-Kai Chen (OFC/NFOEC, 2013)

Experimental demonstration of an optimized 16-ary four-dimensional modulation format using optical OFDM. - Johnny Karout; Xiang Liu 018; Sethumadhavan Chandrasekhar; Erik Agrell; Magnus Karlsson 001; René-Jean Essiambre (OFC/NFOEC, 2013)

406.6-Gb/s PDM-BPSK superchannel transmission over 12, 800-km TWRS fiber via nonlinear noise squeezing. - Xiang Liu 018; S. Chandrasekhar 001; Peter J. Winzer; Robert W. Tkach; Andrew R. Chraplyvy (OFC/NFOEC, 2013)

Multiband DFT-spread-OFDM equalizer with overlapand-add dispersion compensation for low-overhead and low-complexity channel equalization. - Xiang Liu 018; Peter J. Winzer; S. Chandrasekhar 001; Sebastian Randel; Stephen Corteselli (OFC/NFOEC, 2013)

Advanced modulation formats for free-space laser communication. - Thomas H. Wood; Xiang Liu 018; S. Chandrasekhar 001; Robert W. Tkach (OFC/NFOEC, 2013)

Parametric amplification and wavelength conversion of a 2.048-Tbit/s WDM PDM 16-QAM signal. - Hao Hu 009; Robert M. Jopson; Alan H. Gnauck; Mihaela Dinu; Sethumadhavan Chandrasekhar; Xiang Liu 018; Chongjin Xie; M. Montoliu; Sebastian Randel; Colin J. McKinstrie (ECOC, 2014)

Field demonstration of 3×341-Gb/s PDM-OFDM-256 iterative polar modulation signals with a record 11.0-b/s/Hz intrachannel spectral efficiency. - S. Chandrasekhar 001; Xiang Liu 018; Peter J. Winzer; T. Lotz; Chun Ju Youn; Y. H. Kwon; E. S. Nam (OFC, 2014)

Fiber nonlinearity compensation of an 8-channel WDM PDM-QPSK signal using multiple phase conjugations. - Hao Hu 009; Robert M. Jopson; Alan H. Gnauck; Mihaela Dinu; S. Chandrasekhar 001; Xiang Liu 018; Chongjin Xie; M. Montoliu; Sebastian Randel; Colin J. McKinstrie (OFC, 2014)

Superchannel for next-generation optical networks. - Xiang Liu 018; S. Chandrasekhar 001 (OFC, 2014)

Efficient fiber nonlinearity mitigation in 50-GHz-DWDM transmission of 256-Gb/s PDM-16QAM signals by folded digital-back-propagation and channelized FBG-DCMs. - Xiang Liu 018; S. Chandrasekhar 001; Peter J. Winzer; Benoit Maheux-L; Guillaume Brochu; François Trépanier (OFC, 2014)

Multi-channel nonlinearity compensation of 128-Gb/s PDM-QPSK signals in dispersion-managed transmission using dispersion-folded digital backward propagation. - Cen Xia; Xiang Liu 018; S. Chandrasekhar 001; Nicolas K. Fontaine; Likai Zhu; Gen Li (OFC, 2014)

Digital Signal Processing Techniques Enabling Multi-Tb/s Superchannel Transmission: An overview of recent advances in DSP-enabled superchannels. - Xiang Liu 018; Sethumadhavan Chandrasekhar; Peter J. Winzer (IEEE Signal Process. Mag., 2014)

Fiber-to-the-room: a key technology for F5G and beyond. - Dechao Zhang; Jinglong Zhu; Xiang Liu 018; Xuming Wu; Junwei Li; Yan Zeng; Xiaoshu Si; Han Li 008 (J. Opt. Commun. Netw., 2023)

Multi-layer resource scheduling architecture and algorithm for a service-oriented optical network based on a fine grain OTN. - Yang Zhao; Yi Lin; Yunbo Li; Dechao Zhang; Yucong Liu; Yu Zheng; Dong Wang 022; Sheng Liu; Shan Cao; Haoyu Feng; Han Li 008; Xiang Liu 018 (J. Opt. Commun. Netw., 2024)