Symbol Synchronization Exploiting the Symmetric Property in Optical Fast OFDM

Zhao, Jian; Ibrahim, Selwan K.; Rafique, Danish; Gunning, P.; Ellis, A.D.

doi:10.1109/lpt.2011.2118195

Cited by 40 publications

(28 citation statements)

References 9 publications

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“…The optical double side-band 4-ASK Fast-OFDM signal provides a spectral efficiency of 2 bit/s/Hz, so the total data rate per channel was 10 Gbit/s, or 9.3 Gbit/s considering 7% FEC overheads. Each Fast-OFDM frame consisted of one start-of-frame symbol for synchronization [14] and 100 payload symbols.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

“…This demonstration was achieved by using a newer generation of high performance laser sources, a higher bandwidth photo-detector, and by improving the fiber fabrication process [7]. A total capacity of 100 Gbit/s was achieved by externally modulating four lasers with non-return-to-zero (NRZ) on-off keying (OOK) at 15.7 Gbit/s, and directly modulating four lasers with 4-amplitude shift keying (4-ASK) Fast-OFDM [14], each at 9.3 Gbit/s (excluding 7% FEC overheads), spanning a total optical bandwidth of 36.3 nm.…”

Section: Introductionmentioning

confidence: 99%

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100 Gbit/s WDM transmission at 2 µm: transmission studies in both low-loss hollow core photonic bandgap fiber and solid core fiber

Zhang¹,

Kavanagh²,

Li³

et al. 2015

Opt. Express

119

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Abstract:We show for the first time 100 Gbit/s total capacity at 2 µm waveband, using 4 × 9.3 Gbit/s 4-ASK Fast-OFDM direct modulation and 4 × 15.7 Gbit/s NRZ-OOK external modulation, spanning a 36.3 nm wide wavelength range. WDM transmission was successfully demonstrated over 1.15 km of low-loss hollow core photonic bandgap fiber (HC-PBGF) and over 1 km of solid core fiber (SCF). We conclude that the OSNR penalty associated with the SCF is minimal, while a ~1-2 dB penalty was observed after the HC-PBGF probably due to mode coupling to higher-order modes. 594-596 (2011).

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

100 Gbit/s WDM transmission at 2 µm: transmission studies in both low-loss hollow core photonic bandgap fiber and solid core fiber

Zhang¹,

Kavanagh²,

Li³

et al. 2015

Opt. Express

119

View full text Add to dashboard Cite

show abstract

“…Optical fast orthogonal frequency division multiplexing (FOFDM) is a promising candidate for digital signal processing (DSP) based modern communication systems, and has attracted great research interest due to its improved spectral efficiency and reduced system complexity [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The subcarrier multiplexing/demultiplexing in optical FOFDM can be implemented by a discrete cosine transform (DCT) [1] or discrete-Fourier transform (DFT) [2]. Recently, this technique has been experimentally demonstrated in single-mode fibre (SMF)-based optical communication systems using coherent detection [3,4], where it exhibits enhanced tolerance to frequency offset and in-phase/quadrature imbalance [1][2][3][4] when compared to conventional OFDM. However, coherent detection is expensive.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, direct-detection (DD) significantly reduces the system complexity. Intensity-modulation and DD (IM/DD) OFDM has been considered as one of the promising candidates for cost-sensitive applications including Ethernet, access and short metro networks [1][2][3][4][5][6]. FOFDM has been investigated for installed legacy MMF-based links and Ethernet backbones [5] using the same cost effective IM/DD configuration.…”

Section: Introductionmentioning

confidence: 99%

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