Field Demonstration of 100-Gb/s Real-Time Coherent Optical OFDM Detection

Kaneda, Noriaki; Pfau, Timo; Zhang, Huan; Lee, Jeffrey; Chen, Young-Kai; Youn, Chun Ju; Kwon, Young Se; Num, Eun Soo; Chandrasekhar, S.

doi:10.1109/jlt.2015.2399771

Cited by 17 publications

(4 citation statements)

References 24 publications

(22 reference statements)

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“…They carried out an early CO-OFDM experiments over 1,000 km SSMF transmission at 8-Gb/s [14]. Kaneda et al, proposed a field demonstration of 100-Gb/s real-time coherent optical OFDM detection [8].…”

Section: Coherent Optical Ofdm Systems (Co-ofdm) Systemsmentioning

confidence: 99%

“…Optical OFDM has become one of the most capable technologies that are used for designing bit rate and bandwidth variable transponders for spectral efficient optical networks. O-OFDM with phase modulation and coherent detection is also the future for suitable spectral efficient key, robust against system nonlinearities, and for transmission in elastic networks [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient Chromatic and Residual Dispersion Post compensation for Coherent Optical OFDM

2023

International Journal of Science and Engineering Applications

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In lieu of other impairments associated with fiber communication such as; fiber nonlinearity, fading, Intersymbol Interference (ISI), Intercarrier Interference (ICI), Chromatic Dispersion (CD) is compensated by Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) technique. This technique divides the available bandwidth into five subbands, each modulated at a low data rate and postcompensated for the Chromatic Dispersion. Implementation of the Optical OFDM involves the use of Digital Signal Processing (DSP); Inverse Discrete Fourier Transform (IDFT) and Discrete Fourier Transform (DFT) both at the transmitter and receiver respectively. The Residual Dispersion left after CD is compensated by Constellation Adjustment Method (CAM). Simulation results using Optisystem show 107-Gb/s single-channel transmission over 1000-km Standard Single Mode Fiber (SSMF) with polarization division multiplexing Four Quadrature Amplitude Multiplexing (4-QAM) using 128 DFT, 82 subcarriers, 5 pilot subcarriers and 16 guard intervals. Equally, the simulation analysis were done at various transmission distances, OFDM systems show a better Min. BER and Max. Q factor than the conventional Non-Return to Zero (NRZ) systems.

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Section: Coherent Optical Ofdm Systems (Co-ofdm) Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient Chromatic and Residual Dispersion Post compensation for Coherent Optical OFDM

2023

International Journal of Science and Engineering Applications

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“…CO-OFDM represents the ultimate performance in receiver sensitivity, spectral efficiency, and robustness against polarization dispersion, but yet requires the highest complexity in transceiver design. When the modulation technique of OFDM combines with coherent detection, the benefit brought by these two powerful techniques are multifold: (1) High spectral efficiency; [17]. Another interesting and important development is the Sano et al, breakthrough, they proposed and demonstrated the no-guard interval CO-OFDM for 100-Gb/s long-haul Wave Length Division Multiplexing (WDM), where optical OFDM is constructed using optical subcarriers without a need for the cyclic prefix [18].…”

Section: Coherent Optical Ofdm (Co-ofdm)mentioning

confidence: 99%

Optical-OFDM Detection Techniques

Jude¹,

Adamu²,

Luka³

et al. 2018

IJSEA

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Orthogonal Frequency Division Multiplexing (OFDM) is a baseband wired and wireless communication system which has proffered an effective solution to transmission impairment like nonlinearity in fiber, fading, Chromatic Dispersion (CD) which resulted in intersymbol and intercarrier interferences. The urge for a very high speed transmission has lead to a dramatic increase of interest in OFDM based optical communication system in recent years. This paper gives a tutorial overview of O-OFDM detection techniques namely; Direct Detection O-OFDM (DDO-OFDM) and Coherent O-OFDM (CO-OFDM) from the basis, outlining their similarities and differences in their performance. The only different in the conceptual diagram of DDO-OFDM and CO-OFDM is replacing MZMand PIN detector in DDO-OFDM with optical IQ modulator and coherent receiver respectively, although the DSP requirement, Cyclic Prefix (CP), DACs and ADCs design for both will depend on the choice of the designer. The building architecture of direct detection is much cheaper as compared to coherent receiver system, but with the robust implementation of DSP in the transceiver circuit as the signal volume increases, the cost of the coherent receiver will equally come down drastically.

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“…And indeed, FPGA based programmable real-time receivers have been shown in several demonstrations for OFDM and single carrier signals. Real-time reception of 100 Gbit/s coherent OFDM signals was demonstrated [25] as well as a first field demonstration [26]. In case of OFDM also a new efficient real-time processing architecture for beyond 100G has been This work is licensed under a Creative Commons Attribution 3.0 License.…”

Section: Introductionmentioning

confidence: 99%

Low-Complexity Real-Time Receiver for Coherent Nyquist-FDM Signals

Baeuerle

Josten

Eppenberger

et al. 2018

J. Lightwave Technol.

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We propose and demonstrate a new low-complexity hardware architecture and digital signal processing (DSP) implementation for coherent reception of Nyquist frequency division multiplexed (Nyquist-FDM, digital subcarrier multiplexing) signals in real time. Key to achieve lowest complexity is the combination of an optimized frequency domain and time domain processing block. In the frequency domain processing, we combine subcarrier equalization and timing recovery with a noninteger oversampling ratio of 16/15. In the time domain, we take advantage of polar coordinate processing for the carrier recovery to avoid complex multiplications. The receiver is optimized for flexible operation and allows the adaption of filter coefficients and modulation format between 4QAM, hybrid 4/16QAM, and 16QAM within one clock cycle. The efficiency of the DSP is demonstrated by a real-time coherent receiver implementation on a single FPGA and is experimentally evaluated. Despite of the limited hardware resources, the receiver can detect a 30 GBd Nyquist-FDM signal with four subcarriers and a net data rate of 60 Gb/s (4QAM), 90 Gb/s (4/16QAM), or 120 Gb/s (16QAM) sampled with 32 GSa/s and demodulate one of the subcarriers at a time. Transmission of 300 km through standard single mode fiber is demonstrated with a BER below the soft-decision forward error correction limit.

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Field Demonstration of 100-Gb/s Real-Time Coherent Optical OFDM Detection

Cited by 17 publications

References 24 publications

Efficient Chromatic and Residual Dispersion Post compensation for Coherent Optical OFDM

Efficient Chromatic and Residual Dispersion Post compensation for Coherent Optical OFDM

Optical-OFDM Detection Techniques

Low-Complexity Real-Time Receiver for Coherent Nyquist-FDM Signals

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