Journal ArticleDOI
Spectrally Efficient Long-Haul WDM Transmission Using 224-Gb/s Polarization-Multiplexed 16-QAM
Alan H. Gnauck,Peter J. Winzer,Sethumadhavan Chandrasekhar,Xiang Liu,Benyuan Zhu,David W. Peckham +5 more
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TLDR
In this paper, the authors discuss the generation, wavelength-division-multiplexed (WDM) longhaul transmission, and coherent detection of 224-Gb/s PIMO 16-ary quadrature amplitude modulation (16-QAM) at a line rate of 28 Gbaud.Abstract:
We discuss the generation, wavelength-division-multiplexed (WDM) long-haul transmission, and coherent detection of 224-Gb/s polarization-division-multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) at a line rate of 28 Gbaud. We measure a required optical signal-to-noise ratio of 23.4 dB (0.1-nm reference bandwidth; 10-3 bit-error ratio), 3.4-dB off the theoretical limit. Using ultra-large-area fiber, we achieve 2000-km single-channel transmission. We also demonstrate 1200-km WDM transmission on a 50-GHz grid (4-b/s/Hz spectral efficiency), including three passes through a wavelength-selective switch.read more
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Journal ArticleDOI
Terabit free-space data transmission employing orbital angular momentum multiplexing
Jian Wang,Jian Wang,Jeng-Yuan Yang,Irfan Fazal,Nisar Ahmed,Yan Yan,Hao Huang,Yongxiong Ren,Yang Yue,S. Dolinar,Moshe Tur,Alan E. Willner +11 more
TL;DR: In this paper, the authors demonstrate the ability to multiplex and transfer data between twisted beams of light with different amounts of orbital angular momentum, which provides new opportunities for increasing the data capacity of free-space optical communications links.
Journal ArticleDOI
Massive individual orbital angular momentum channels for multiplexing enabled by Dammann gratings
Ting Lei,Meng Zhang,Yuru Li,Ping Jia,Gordon Ning Liu,Xiaogeng Xu,Zhaohui Li,Changjun Min,Jiao Lin,Changyuan Yu,Hanben Niu,Xiaocong Yuan +11 more
TL;DR: In this article, the Dammann optical vortex gratings (DOVGs) are used to realize multiplexing based on the generation, transmission and detection of optical angular momentum (OAM).
Journal ArticleDOI
100 Gbit/s hybrid optical fiber-wireless link in the W-band (75-110 GHz).
Xiaodan Pang,Antonio Caballero,Anton Dogadaev,Valeria Arlunno,Robert Borkowski,Jesper S. Pedersen,Lei Deng,Fotini Karinou,Fabien Roubeau,Darko Zibar,Xianbin Yu,Idelfonso Tafur Monroy +11 more
TL;DR: An 100 Gbit/s hybrid optical fiber-wireless link is demonstrated by employing photonic heterodyning up-conversion of optical 12.5 Gbaud polarization multiplexed 16-QAM baseband signal with two free running lasers with bit-error-rate performance below the FEC limit.
Journal ArticleDOI
Optical communication beyond orbital angular momentum
Abderrahmen Trichili,Carmelo Rosales-Guzmán,Angela Dudley,Angela Dudley,Bienvenu Ndagano,Amine Ben Salem,Mourad Zghal,Mourad Zghal,Andrew Forbes +8 more
TL;DR: This work demonstrates multiplexing and demultiplexing using both the radial and azimuthal degrees of freedom using a holographic approach that allows over 100 modes to be encoded on a single hologram, across a wide wavelength range, in a wavelength independent manner.
Journal ArticleDOI
Approaching Nyquist Limit in WDM Systems by Low-Complexity Receiver-Side Duobinary Shaping
TL;DR: In this article, a low-complexity coherent receiver solution is presented to improve spectral efficiency in WDM systems based on the receiver-side partial-response equalization and maximum-likelihood sequence detection.
References
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Journal ArticleDOI
Digital Coherent Optical Receivers: Algorithms and Subsystems
TL;DR: In this article, a theoretical analysis of the dual-polarization constant modulus algorithm is presented, where the control surfaces several different equalizer algorithms are derived, including the decision-directed, trained, and the radially directed equalizer for both polarization division multiplexed quadriphase shift keyed (PDM-QPSK) and 16 level quadrature amplitude modulation (PDm-16-QAM).
Journal ArticleDOI
Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission
C.R.S. Fludger,T. Duthel,D. van den Borne,C. Schulien,E.-D. Schmidt,T. Wuth,J. C. Geyer,E. de Man,Khoe Giok-Djan,H. de Waardt +9 more
TL;DR: In this paper, the use of a coherent digital receiver for compensation of linear transmission impairments and polarization demultiplexing in a transmission system compatible with a future 100-Gb/s Ethernet standard is discussed.
Journal ArticleDOI
Spectrally Efficient Long-Haul Optical Networking Using 112-Gb/s Polarization-Multiplexed 16-QAM
TL;DR: In this paper, the effects of finite analog-to-digital converter resolution, laser frequency offset, laser phase noise, and narrowband optical filtering on the performance of PDPM 16-ary quadrature amplitude modulation (16-QAM) were investigated.
Proceedings Article
Transmission of a 1.2-Tb/s 24-carrier no-guard-interval coherent OFDM superchannel over 7200-km of ultra-large-area fiber
TL;DR: In this paper, the authors demonstrate the generation of a 1.2-Tb/s NGI-CO-OFDM superchannel comprising of 24 frequency-locked 12.5GHz spaced PDM-QPSK carriers, and transmit it over 72×100-km of ultra-large-area fiber, achieving 3.7b /s/Hz channel spectral efficiency.
Proceedings ArticleDOI
69.1-Tb/s (432 × 171-Gb/s) C- and extended L-band transmission over 240 km Using PDM-16-QAM modulation and digital coherent detection
Akihide Sano,Hiroji Masuda,Takayuki Kobayashi,M. Fujiwara,Horikoshi Kengo,E. Yoshida,Yutaka Miyamoto,Munehiro Matsui,Masato Mizoguchi,Hiroshi Yamazaki,Yohei Sakamaki,Hiroyuki Ishii +11 more
TL;DR: In this paper, the authors demonstrate the record total capacity of 69.1 Tb/s with a spectral efficiency of 6.4 b/s/Hz by employing 21.4-Gbaud 16-QAM modulation, blind digital coherent detection, and 10.8-THz ultra-wideband amplification in the C- and extended L-bands.