Enhanced Optical Communications Through Joint Time-Frequency Multiplexing Strategies

被引：5

作者：

Cincotti, G. ^{[1
]}

Wada, N. ^{[3
]}

Uenohara, H. ^{[5
]}

Kodama, T. ^{[6
]}

Konishi, T. ^{[2
]}

Murakawa, T. ^{[2
]}

Nagashima, T. ^{[2
]}

Shimizu, S. ^{[3
]}

Hasegawa, M. ^{[2
]}

Hattori, K. ^{[4
]}

Okuno, M. ^{[4
]}

Mino, S. ^{[4
]}

Himeno, A. ^{[4
]}

机构：

[1] Univ Roma Tre, I-00143 Rome, Italy

[2] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[3] Natl Inst Informat & Commun Technol, Tokyo 1848795, Japan

[4] NTT Elect Co Ltd, Naka, Ibaraki 3110122, Japan

[5] Tokyo Inst Technol, Yokohama, Kanagawa 2268503, Japan

[6] Univ Yamanashi, Grad Fac Interdisciplinary Res, Kofu, Yamanashi 4008510, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 02期

关键词：

Optical fibers; Optical pulses; Optical fiber dispersion; Optical signal processing; Peak to average power ratio; Fractional Fourier transform; Nyquist OTDM; OFDM; optical signal processing; optical Fourier transform; NYQUIST PULSE TRANSMISSION; FOURIER-TRANSFORM; FRACTIONAL OFDM; REDUCTION; EFFICIENT; SYSTEMS; TBIT/S;

D O I：

10.1109/JLT.2019.2942452

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a power-efficient and reduced-complexity all-optical approach to generate high-bit rate superchannels, based on joint time-frequency multiplexing. Both optical orthogonal frequency division multiplexing (OFDM) and Nyquist-optical time division multiplexing (N-OTDM) signals are generated and processed using a wavelength-selective switch (WSS). We use the fractional Fourier transform (FrFT) to introduce the largest degree of flexibility in optical networking, and we experimentally demonstrate that the transmitted signal can be received either in parallel, as OFDM subcarriers, or in series, as an N-OTDM signal. Compared to conventional optical OFDM, we achieve peak to average power ratio (PAPR) reduction; compared to N-OTDM, we introduce flexible chromatic dispersion (CD) management. We successfully demonstrate a field trial experiment of 4-channel 40 Gb/s hybrid OFDM/N-OTDM transmission over the 89.2-km Japan gigabit network-extreme (JGN X) test bed, with 1 bits/Hz spectral efficiency.

引用

页码：346 / 351

页数：6

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