Journal ArticleDOI
Ultra-High Capacity WDM Transmission Using Spectrally-Efficient PDM 16-QAM Modulation and C- and Extended L-Band Wideband Optical Amplification
Akihide Sano,Hiroji Masuda,Takayuki Kobayashi,Masamichi Fujiwara,Horikoshi Kengo,E. Yoshida,Yutaka Miyamoto,Munehiro Matsui,Masato Mizoguchi,Hiroshi Yamazaki,Yohei Sakamaki,Hiroyuki Ishii +11 more
TLDR
In this paper, the authors describe ultra-high capacity transmission based on spectrally efficient multi-level modulation and wideband optical amplification techniques and demonstrate 69.1 Tb/s transmission over 240 km of low loss pure silica core fibers.Abstract:
This paper describes ultrahigh capacity transmission based on spectrally-efficient multi-level modulation and wideband optical amplification techniques. 21.4-Gbaud polarization-division multiplexed (PDM) 16-ary quadrature amplitude modulation (QAM) signals are generated by utilizing an optical synthesis technique, wavelength-multiplexed with 25-GHz spacing by optical pre-filtering, and received by an intradyne coherent receiver based on digital signal processing (DSP) with pilotless algorithms. These techniques realize a spectral efficiency (SE) of 6.4 b/s/Hz. Furthermore, a hybrid amplification technique that combines distributed Raman and dual-band erbium-doped amplifiers (EDFAs) realizes 10.8-THz signal bandwidth in C- and extended L-bands. By using these techniques, we successfully demonstrate 69.1 Tb/s transmission over 240 km of low loss pure silica core fibers.read more
Citations
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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
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
Mode-selective couplers for few-mode optical fiber networks
John D. Love,Nicolas Riesen +1 more
TL;DR: Tapered mode-selective couplers are shown to allow for ultra-broadband mode-division multiplexing of few-mode optical fiber to represent the realization of compact low-loss mode-multiplexers for use in high-bandwidth few- mode fiber networks.
Journal ArticleDOI
Orbital angular momentum of light for communications
TL;DR: In this paper, a review describes challenges, advances, and perspectives on different aspects of the OAM-based optical communications, including (a) OAM generation/detection and (de) multiplexing, (b) classical free-space optical communication links, (c) fiber-based communication links and (d) quantum communication links.
References
More filters
Journal ArticleDOI
Digital filters for coherent optical receivers.
TL;DR: Using the analytical solution an upper bound on the number of taps required to compensate chromatic dispersion is obtained, with simulation revealing an improved bound of 2.2 taps per 1000ps/nm for 10.7GBaud data.
Journal ArticleDOI
Hardware-Efficient Coherent Digital Receiver Concept With Feedforward Carrier Recovery for $M$ -QAM Constellations
TL;DR: In this paper, the authors proposed a novel digital carrier recovery algorithm for arbitrary M-ary quadrature amplitude modulation (M-QAM) constellations in an intradyne coherent optical receiver.
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.
Journal ArticleDOI
The multimodulus blind equalization and its generalized algorithms
TL;DR: This algorithm combines the benefits of the well-known reduced constellation algorithm (RCA) and constant modulus algorithm (CMA) with more flexibility and is better suited to take advantage of the symbol statistics of certain types of signal constellations.
Proceedings ArticleDOI
10.92-Tb/s (273/spl times/40-Gb/s) triple-band/ultra-dense WDM optical-repeatered transmission experiment
Kiyoshi Fukuchi,T. Kasamatsu,Masao Morie,R. Ohhira,Toshiharu Ito,K. Sekiya,Daisaku Ogasahara,T. Ono +7 more
TL;DR: In this article, the first 10-Tb/s WDM transmission in single fiber using S-, C- and L-bands is demonstrated with LD-pumped gain-shifted thulium-doped fiber amplifiers, polarization interleave multiplexing combined with wavelength/polarization demultiplexing for 50GHz-spaced 40-Gb/s/ch WDM signals, and a transmission line optimization for triple-band systems.