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Achievable information rates (AIRs) of wideband optical communication systems using ~40 nm (~5 THz) EDFA and ~100 nm (~12.5 THz) distributed Raman amplification are estimated based on a first-order perturbation analysis. The AIRs of each…

Information Theory · Computer Science 2017-03-08 Daniel Semrau , Tianhua Xu , Nikita A. Shevchenko , Milen Paskov , Alex Alvarado , Robert I. Killey , Polina Bayvel

We report the co-propagation, over 50 km of SSMF, of the quantum channel (1310 nm) of a QKD system with ~17 dBm total power of DWDM data channels (1550 nm range). A metric to evaluate Co-propagation Efficiency is proposed.

Quantum Physics · Physics 2023-05-24 P. Gavignet , F. Mondain , E. Pincemin , A. J. Grant , L. Johnson , R. I. Woodward , J. F. Dynes , A. J. Shields

The Single Carrier-Frequency Division Multiple Access (SC-FDMA) is a transmission technique used in the uplink of Long Term Evolution (LTE) and 5G systems, as it is characterized by reduced transmitted signal envelope fluctuations in…

Networking and Internet Architecture · Computer Science 2025-01-22 Pawel Kryszkiewicz

We demonstrate OESCL-band same-wavelength bi-directional transmission over 60 km HCF with 42.5 THz bandwidth, achieving GMIs comparable with the highest unidirectional SMF data-rates in both directions, with an aggregate of 423.7 + 426.5…

Optical interconnect is a potential solution to attain the large bandwidth on-chip communications needed in high performance computers in a low power and low cost manner. Mode-division multiplexing (MDM) is an emerging technology that…

Emerging Technologies · Computer Science 2017-08-02 Xinru Wu , Chaoran Huang , Ke Xu , Chester Shu , Hon Ki Tsang

We report on the realization of a novel fiber-optic radio frequency (RF) transfer scheme with the bidirectional frequency division multiplexing (FDM) dissemination technique. Here, the proper bidirectional frequency map used in the forward…

Instrumentation and Detectors · Physics 2021-07-07 Qi Li , Liang Hu , jinbo Zhang , Jianping Chen , Guiling Wu

This paper presents the design and the realization of a 60 GHz wireless Gigabit Ethernet communication system. A differential encoded binary phase shift keying modulation (DBPSK) and differential demodulation schemes are adopted for the IF…

Networking and Internet Architecture · Computer Science 2010-11-10 Lahatra Rakotondrainibe , Yvan Kokar , Gheorghe Zaharia , Ghaïs El Zein

This report describes the design and proposal of a wireless link capable of broadcasting at 1 Gbps. For this application, isotropic antennas, 256 QAM modulation, and BER level less than 1e-5, without using error correction coding, were…

Signal Processing · Electrical Eng. & Systems 2023-06-21 David Noel

We report long-haul transmissions of single-carrier 300 GBd dual-polarization signals with optical arbitrary waveform generation and measurement. We demonstrate net 1.6 Tb/s over 9075 km with PCS-16QAM and 2.4 Tb/s over 1210 km with…

We demonstrate up to 12 km, 56 Gb/s DMT transmission using high-speed VCSELs in the 1.5 um wavelength range for future 400Gb/s intra-data center connects, enabled by vestigial sideband filtering of the transmit signal.

We generate and transmit 75-GHz-bandwidth OFDM signals over the air using three mutually frequency-locked lasers, achieving minimal frequency gap between the wireless W and D bands using optical-assisted approaches, resulting in 173.5 Gb/s…

Signal Processing · Electrical Eng. & Systems 2023-11-09 Zichuan Zhou , Amany Kassem , James Seddon , Eric Sillekens , Izzat Darwazeh , Polina Bayvel , Zhixin Liu

We demonstrate 64 GBd signal generation up to bipolar-8-ASK utilizing a single MZM, monolithically integrated with segmented drivers in SiGe. Using polarization multiplexing, 300-Gb/s net data rate transmission over 120 km SSMF is shown.

Faster-than-Nyquist (FTN) signal achieves higher spectral efficiency and capacity compared to Nyquist signal due to its smaller pulse interval or narrower subcarrier spacing. Shannon limit typically defines the upper-limit capacity of…

Information Theory · Computer Science 2017-06-28 Ji Zhou , Yaojun Qiao , Zhanyu Yang , Mengqi Guo , Xizi Tang

The performance of optical fiber systems based on nonlinear frequency-division multiplexing (NFDM) or on more conventional transmission techniques is compared through numerical simulations. Some critical issues affecting NFDM…

Information Theory · Computer Science 2017-07-19 Stella Civelli , Enrico Forestieri , Marco Secondini

In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations…

Networking and Internet Architecture · Computer Science 2015-03-12 Ojuswini Arora , Dr. Amit kumar Garg , Savita Punia

We transmit probabilistic enumerative sphere shaped dual-polarization 64-QAM at 350Gbit/s/channel over 1610km SSMF using a short blocklength of 200. A reach increase of 15% over constant composition distribution matching with identical…

We propose a 4-dimensional 2-ary amplitude ring-switched modulation format with 64 symbols, which is denoted as 4D-2A-RS64 encoded over two polarization tributaries to improve the transmission performance over long-haul optical fibers in…

Signal Processing · Electrical Eng. & Systems 2023-11-30 Jingtian Liu , Élie Awwad , Yves Jaouën

This paper presents an innovative approach leveraging Spectrally Efficient Frequency Division Multiplexing (SEFDM) with enhancements, including Frequency Domain Cyclic Prefix (FDCP) and Modified Non-Linear (MNL) acceleration, to address…

Signal Processing · Electrical Eng. & Systems 2024-02-07 Mahdi Shamsi , Farokh Marvasti

We experimentally investigated the performance of split nonlinearity compensation schemes for single and multi-channel WDM systems. We show that split NLC SNR gains of more than 0.4 dB at 5540 km can be achieved compared to transmitter- or…

Signal Processing · Electrical Eng. & Systems 2024-08-15 Ronit Sohanpal , Eric Sillekens , Jiaqian Yang , Rômulo Aparecido , Zhixin Liu , Robert Killey , Polina Bayvel

We show a non-negligible cross-talk between nonlinear modes in Nonlinear Frequency-Division Multiplexed system when data is modulated over the nonlinear Fourier spectrum, both the continuous spectrum and the discrete spectrum, and…

Signal Processing · Electrical Eng. & Systems 2018-01-03 Vahid Aref , Son T. Le , Henning Buelow