| 1. |
- Lorences Riesgo, Abel, 1987, et al.
(författare)
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Phase-Sensitive Amplification of 28 GBaud DP-QPSK Signal
- 2015
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Ingår i: 2015 Optical Fiber Communications Conference and Exhibition, OFC 2015, Los Angeles, United States, 22-26 March 2015. - Washington, D.C. : OSA. - 9781557529374 ; , s. 7122090-
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Konferensbidrag (refereegranskat)abstract
- We demonstrate, for the first time, amplification of a DP-QPSK signal using a vector phase-sensitive amplifier (PSA). The PSA-based receiver shows an about 0.7 dB sensitivity improvement compared to an EDFA-based receiver.
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| 2. |
- Lundström, Carl Peter, 1982, et al.
(författare)
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Mask testing of 28 gbaud 16-QAM transmitters using time-resolved error vector magnitude
- 2015
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Ingår i: Signal Processing in Photonic Communications, SPPCom 2015; Omni Parker HouseBoston; United States; 27 June 2015 through 1 July 2015. - 9781557520005 ; , s. SpS4D.3-
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Konferensbidrag (refereegranskat)abstract
- We propose time-resolved EVM for characterization of 16-QAM transmitters. By designing a mask test, different impairments can be separated and quantified. The impact from quadrature error and timing skew are investigated experimentally.
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| 3. |
- Olsson, Samuel L I, 1984, et al.
(författare)
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Phase-Sensitive Amplified Transmission Links for Improved Sensitivity and Nonlinearity Tolerance
- 2015
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Ingår i: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 33:3, s. 710-721
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Tidskriftsartikel (refereegranskat)abstract
- In this paper we investigate the properties of transmission links amplified by phase-sensitive amplifiers (PSAs). Using an analytic description we explain the principles enabling improved sensitivity compared to conventional links amplified by phase-insensitive amplifiers (PIAs) and mitigation of nonlinear transmission distortions. We demonstrate these features using numerical simulations and in particular we show the possibility of efficiently mitigating both self-phase modulation (SPM) induced distortions and nonlinear phase noise (NLPN) if the link dispersion map is optimized. The properties of the noise on signal and idler are important and to enable NLPN mitigation the noise must be correlated at the link input. We investigate the role of the dispersion map in detail and show that in a link with standard single mode fiber (SSMF) the optimum dispersion map for efficient nonlinearity mitigation corresponds to pre-compensation of an amount equal to the effective loss length. Furthermore, we experimentally demonstrate both improved sensitivity and mitigation of nonlinearities in a 105 km PSA-amplified link transmitting 10 GBd 16-ary quadrature amplitude modulation (16QAM) data. We measure a combined effect allowing for more than 12 dB larger span loss in a PSA-amplified link compared to a conventional PIA-amplified link to reach the same bit error ratio (BER) of 1×10-3.
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| 4. |
- Szczerba, Krzysztof, 1985, et al.
(författare)
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Impact of Forward Error Correction on Energy Consumption of VCSEL-based Transmitters
- 2015
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Ingår i: 41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015. - 9788460817413 ; 2015-November
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Konferensbidrag (refereegranskat)abstract
- We present an analysis of the effect of FEC on energy consumption of VCSEL based transmitters for short-range optical links. We show that a low-complexity FEC can reduce the overall energy consumption of the transmitter.
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| 6. |
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| 7. |
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| 8. |
- Andrekson, Peter, 1960
(författare)
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Phase-sensitive amplifiers for long-haul transmission systems
- 2015
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Ingår i: IEEE Photonics Conference, IPC 2015, Reston, United States, 30-31 August. - 2374-0140. - 9781479974658 ; , s. 310-311
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Konferensbidrag (refereegranskat)abstract
- We review recent development in the use of ultra low noise highly-nonlinear-fiber-based phase sensitive parametric amplifiers applied in optical transmission. Their capability to also mitigate nonlinear impairments will particularly be addressed.
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| 9. |
- Astra, E., et al.
(författare)
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Dispersion management for nonlinearity mitigation in two-span 28 GBaud QPSK phase-sensitive amplifier links
- 2017
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Ingår i: Optics Express. - 1094-4087 .- 1094-4087. ; 25:12, s. 13163-13173
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Tidskriftsartikel (refereegranskat)abstract
- We present an investigation of dispersion map optimization for-span single channel 28 GBaud QPSK transmission systems with phase-sensitive amplifiers (PSAs). In experiments, when the PSA link is operated in a highly nonlinear regime, a 1.4 dB error vector magnitude (EVM) improvement is achieved compared to a one-span optimized dispersion map link due to improved nonlinearity mitigation. The two-span optimized dispersion map of a link differs from the optimized dispersion map of a dispersion managed phase-insensitive amplifier (PIA) link, Simulations show that the performance of the two-span dispersion map optimized PSA link does not improve by residual dispersion optimization. Further, by using the two-span optimized dispersion maps repeatedly in a long-haul PSA link instead of one-span optimized maps, the maximum transmission reach can he improved 1,5 times, (C) 2017 Optical Society of America
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| 10. |
- Astra, E., et al.
(författare)
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Dispersion map optimization for nonlinearity mitigation in two-span phase-sensitive amplifier links
- 2016
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Ingår i: 42nd European Conference on Optical Communication, ECOC 2016; Dusseldorf; Germany; 18 September 2016 through 22 September 2016. - 9783800742745 ; , s. 953-955
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Konferensbidrag (refereegranskat)abstract
- The first investigation of dispersion map optimization in two-span PSA-amplified links is presented. We show numerically and experimentally, that the nonlinearity mitigation improves by 1.4 dB if different dispersion maps are applied in each span, compared to single-span optimized maps.
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