Beyond 100-Gb/s Transmission Over 80-km SMF Using Direct-Detection SSB-DMT at C-Band

Zhang, Liang; Zuo, Tao; Mao, Yuan; Zhang, Qiang; Zhou, Enbo; Liu, Gordon Ning; Xu, Xiaogeng

doi:10.1109/jlt.2015.2464091

Cited by 119 publications

(28 citation statements)

References 15 publications

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“…Recently, many researchers have focused on 100 Gb/s optical OFDM: In [20] authors propose a single sideband discrete multitone (SSB-DMT) with RF-up conversion (I & Q) and directdetection for a signal capacity greater than 100 Gb/s that was successfully transmitted over 80 km SMF without chromatic dispersion compensation. In [20] transmission performance was enhanced using a combination of bit-and-power loading (with different QAM levels), DSP-based Trellis coder modulation (TCM), and nonlinearity equalization (NLE) algorithms.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance evaluation of an IMDD optical OFDM-CDMA system

2018

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In this paper, we propose a modulation technique for passive optical networks that harnesses two-dimensional prime hop system optical code division multiplexing access (OCDMA) and optical orthogonal frequency-division multiplexing (OFDM) for intensity modulation with direct-detection (IMDD) to enhance users' signal capacity in a cost-effective manner. The theoretical analysis is built from an analytical formula that takes into account both multiple-access interference and photodetector noise. Results show that OFDM-OCDMA with multiple users has similar performance to single-user conventional OOFDM for low transmitted powers.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Performance evaluation of an IMDD optical OFDM-CDMA system

2018

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“…An obvious disadvantage of the scheme described in this section is that it requires a relatively expensive I/Q modulator, which is an undesirable constraint in the case of singlespan low-cost systems. This disadvantage can be remedied to some extent by using a single-ended Mach-Zehnder modulator driven with two voltages [22], although the potential of this solution for the implementation of the KK scheme is yet to be evaluated. Another option for generating a SSB signal of the kind required by the KK procedure, is to combine an amplitude modulator with an optical filter.…”

Section: B Discussionmentioning

confidence: 99%

Kramers–Kronig PAM Transceiver and Two-Sided Polarization-Multiplexed Kramers–Kronig Transceiver

Antonelli

Mecozzi

Shtaif

2018

J. Lightwave Technol.

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We propose two transceiver schemes based on Kramers Kronig (KK) detection. One targets low-cost highthroughput applications and uses PAM transmission in combination with direct detection and digital reconstruction of the optical phase. This scheme allows digital compensation of chromatic dispersion and provides a significant improvement in terms of spectral efficiency, compared to conventional PAM transmission. The second scheme targets high-channel-count coherent systems with the aim of simplifying the receiver complexity by reducing the optical components count. This scheme is based on the transmission of two SSB signals that share a transmission laser, each obtained by suppressing either optically or digitally one side of a real-valued signal. At the receiver, the two SSB signals are received separately, after optical de-interleaving, by KK detection, using a single local oscillator laser.

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“…The combined signal was then fed into a dual-drive Mach-Zehnder modulator (DD-MZM) for optical SSB signal modulation. Note that the reason for using the DD-MZM instead of the IQ modulator (IQM) in this work is that the DD-MZM based approach has a simpler configuration and easier implementation and offers costs as low as 1/3 that of the IQM-based scheme [21], which makes it more attractive for cost-sensitive DD systems. The main idea of such optical SSB signal generation is to bias the DD-MZM at its quadrature point and to modulate it with a relatively small optical modulation index (OMI).…”

Section: Introductionmentioning

confidence: 99%

“…The main idea of such optical SSB signal generation is to bias the DD-MZM at its quadrature point and to modulate it with a relatively small optical modulation index (OMI). The corresponding principles were detailed in [21]. At the output of the DD-MZM, a waveshaper was used to de-multiplex the odd and even channels for de-correlation via transmission along different lengths of fibre.…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of Dual O+C-Band WDM Transmission Over 50-km SSMF With Direct Detection

Hong

Bottrill

Taengnoi

et al. 2020

J. Lightwave Technol.

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In this paper, we experimentally demonstrate dual O+C-band direct-detection wavelength division multiplexed (WDM) transmission over 50 km of standard single-mode fibre, wherein 4×40-Gb/s Nyquist on-off keying (OOK) modulation is used in the O-band whilst 4×40-Gb/s single-sideband (SSB) subcarrier modulation (SCM) with Kramers-Kronig (KK) detection is used in the C-band. A bismuth-doped fibre amplifier (BDFA) is used as the pre-amplifier in the O-band to extend the reach of the direct-detection system. It is demonstrated that the O-band exhibits superior receiver sensitivity relative to the C-band and its transmission performance is limited by the chromatic dispersion (CD), especially when longer reaches and wavelengths in the longer edge of the band are explored. In contrast, due to the adoption of the SSB format, the C-band shows enhanced tolerance to CD effects. In this case, some receiver sensitivity is sacrificed to accommodate the adoption of the KK detection which is used to eliminate the signal-to-signal beating interference of the SSB-SCM format. The inferior receiver sensitivity in the C-band is caused by (1) the higher CSPR requirement of the KK detection and (2) the restriction of small-signal modulation for the dual-drive Mach-Zehnder modulator to generate optical SSB signals. The results indicate the feasibility to further extend the reach of O-band transmission systems, which enables the possibility to realise dual O+C-band WDM transmission in intermediate-to long-haul optical networks. Index Terms-Optical communications, Point-to-point transmission, Ultra-wideband WDM systems.

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Beyond 100-Gb/s Transmission Over 80-km SMF Using Direct-Detection SSB-DMT at C-Band

Cited by 119 publications

References 15 publications

Performance evaluation of an IMDD optical OFDM-CDMA system

Performance evaluation of an IMDD optical OFDM-CDMA system

Kramers–Kronig PAM Transceiver and Two-Sided Polarization-Multiplexed Kramers–Kronig Transceiver

Experimental Demonstration of Dual O+C-Band WDM Transmission Over 50-km SSMF With Direct Detection

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