Mode-division-multiplexed 3×112-Gb/s DP-QPSK transmission over 80-km few-mode fiber with inline MM-EDFA and Blind DSP

Sleiffer, V. A. J. M.; Jung, Yongmin; Inan, Beril; Chen, H.; Uden, R.G.H. van; Kuschnerov, Maxim; Borne, D. van den; Jansen, S.L.; Veljanovski, V.; Koonen, Ton; Richardson, David J.; Alam, Shaif-ul; Poletti, F.; Sahu, J.K.; Dhar, Anirban; Corbett, Brian; Winfield, Richard Dien; Ellis, Andrew; Waardt, H. de

doi:10.1364/eceoc.2012.tu.1.c.2

Cited by 10 publications

(16 citation statements)

References 2 publications

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“…This results in an increased OSNR penalty for the higher order constellations. These FMF BTB OSNR penalties are similar to previous work [21]. Note that in [21], binary phase plate mode multiplexers were used.…”

Section: Measurement Resultssupporting

confidence: 67%

Time domain multiplexed spatial division multiplexing receiver

Uden¹,

Okonkwo²,

Chen³

et al. 2014

Opt. Express

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A novel time domain multiplexed (TDM) spatial division multiplexing (SDM) receiver which allows for the reception of >1 dual polarization mode with a single coherent receiver, and corresponding 4-port oscilloscope, is experimentally demonstrated. Received by two coherent receivers and respective 4-port oscilloscopes, a 3 mode transmission of 28GBaud QPSK,8,16, and 32QAM over 41.7km of few-mode fiber demonstrates the performance of the TDM-SDM receiver with respect to back-to-back. In addition, by using carrier phase estimation employing one digital phase locked loop per output, the frequency offset between the transmitter laser and local oscillator is shown to perform similar to previous work which employs 3 coherent receivers and 4-port oscilloscopes which are dedicated to the reception of each the three modes.

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Section: Measurement Resultssupporting

confidence: 67%

Time domain multiplexed spatial division multiplexing receiver

Uden¹,

Okonkwo²,

Chen³

et al. 2014

Opt. Express

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show abstract

“…After the fiber transmission a phase-plate based mode demultiplexer (DMUX) is used to perform the inverse operation of the mode multiplexer. The properties of the mode multiplexer, demultiplexer, and fiber have been detailed in [9]. Each of the three DMUX outputs are connected to individual coherent receivers where two synchronized real-time oscilloscopes act as 12 ( = 3 modes × 2 polarizations × 2 real-valued tributaries of a complex symbol) analog to digital converters (ADCs).…”

Section: Methodsmentioning

confidence: 99%

“…For the analysis a 28GBaud 3 mode dual polarization (DP) quadrature phase shift keying (QPSK) coherent transmission over 80km of few mode fiber is used [9]. We show that the convergence time can be greatly reduced for the FMF transmission, without an optical signal to noise ratio (OSNR) penalty in comparison to the fixed step size method.…”

Section: Introductionmentioning

confidence: 99%

MIMO equalization with adaptive step size for few-mode fiber transmission systems

Uden¹,

Okonkwo²,

Sleiffer³

et al. 2013

Opt. Express

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“…Recently, there has been resurgence in the use of higher order modulation formats mainly attributed to the improvements in the electronic capabilities of digital-to-analog converters and signal processing techniques [4][5][6]. Well known formats such as QPSK, 8, 16 and 32 QAM have become straightforward to generate.…”

Section: Two-dimensional Codingmentioning

confidence: 99%

“…Hence, the ongoing rapid development of spacedivision multiplexing (SDM) transmission systems is expected to provide a viable strategy to increasing capacity of optical links. To support SDM, emerging transmission systems primarily employ multiple single-mode cores [4,5], multi-mode transmission [6,7], or a combination of both spatial aspects [8,9]. In this work, note that we employ a specific case of multi-mode transmission by exploiting 3 linearly polarized (LP) modes ; LP 01 , LP 11a and LP 11b which are excited and co-propagated in a few-mode fiber (FMF) transmission system.…”

Section: Introductionmentioning

confidence: 99%

Advanced coding techniques for few mode transmission systems

Okonkwo¹,

Uden²,

Chen³

et al. 2015

Opt. Express

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Abstract:We experimentally verify the advantage of employing advanced coding schemes such as space-time coding and 4 dimensional modulation formats to enhance the transmission performance of a 3-mode transmission system. The performance gain of space-time block codes for extending the optical signal-to-noise ratio tolerance in multiple-input multiple-output optical coherent spatial division multiplexing transmission systems with respect to single-mode transmission performance are evaluated. By exploiting the spatial diversity that few-mode-fibers offer, with respect to single mode fiber back-to-back performance, significant OSNR gains of 3.2, 4.1, 4.9, and 6.8 dB at the hard-decision forward error correcting limit are demonstrated for DP-QPSK 8, 16 and 32 QAM, respectively. Furthermore, by employing 4D constellations, 6 × 28Gbaud 128 set partitioned quadrature amplitude modulation is shown to outperform conventional 8 QAM transmission performance, whilst carrying an additional 0.5 bit/symbol.

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Mode-division-multiplexed 3×112-Gb/s DP-QPSK transmission over 80-km few-mode fiber with inline MM-EDFA and Blind DSP

Abstract: We show transmission of a 3x112-Gb/s DP-QPSK mode-division-multiplexed signal up to 80km, with and without multi-mode EDFA, using blind 6x6 MIMO digital signal processing. We show that the OSNR-penalty induced by mode-mixing in the multi-mode EDFA is negligible.

Cited by 10 publications

References 2 publications

Time domain multiplexed spatial division multiplexing receiver

Time domain multiplexed spatial division multiplexing receiver

MIMO equalization with adaptive step size for few-mode fiber transmission systems

Advanced coding techniques for few mode transmission systems

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