Effects of cross-phase modulation in wavelength-multiplexedSCMvideo transmission systems

Wang, Z.; Bodtker, E.; Jacobsen, Gunnar

doi:10.1049/el:19951074

Cited by 51 publications

(5 citation statements)

References 3 publications

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“…The crosstalk XT(z) due to XPM is [7]: (6) where b is the dispersion parameter, W is the subcarrier angle frequency, g is the fiber nonlinearity coefficient, P o is the optical power, and Z is the fiber transmission length. The crosstalk is mainly caused by the cross-phase modulation (XPM) interaction.…”

Section: Resultsmentioning

confidence: 99%

Four-directional Transport of AM-VSB CATV System over 80-km Large Effective Area Fiber

Lu¹

2002

Journal of Optical Communications

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This study proposes and demonstrates, for the first time, a four-directional externally modulated NTSC AM-VSB 77-channel transport system over an 80-km large effective area fiber (LEAF) which uses four-directional transport and dense-wavelength-division-multiplexing (DWDM) techniques. Not only four times of the channel capacity, but also good performances of carrier-to-noise ratio (CNR) ≥ 50 dB, composite second order (CSO) ≥ 65 dB and composite triple beat (CTB) ≥ 63 dB were obtained over an 80-km LEAF transport.

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Section: Resultsmentioning

confidence: 99%

Four-directional Transport of AM-VSB CATV System over 80-km Large Effective Area Fiber

Lu¹

2002

Journal of Optical Communications

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“…Another alternative is multiplexing several QPSK modulated channels using subcarrier multiplexing (SCM -see e.g. [4]) techniques or OFDM techniques. OFDM MUX/DEMUX techniques are seen as more spectrally efficient than SCM techniques.…”

Section: Introductionmentioning

confidence: 99%

Phase Noise Influence in Long-range Coherent Optical OFDM Systems with Delay Detection, IFFT Multiplexing and FFT Demodulation

Jacobsen¹,

Xu²,

Popov³

et al. 2012

J. Opt. Commun.

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We present a study of the influence of dispersion induced phase noise for CO-OFDM systems using FFT multiplexing/IFFT demultiplexing techniques (software based). The software based system provides a method for a rigorous evaluation of the phase noise variance caused by Common Phase Error (CPE) and Inter-Carrier Interference (ICI) including -for the first time to our knowledge -in explicit form the effect of equalization enhanced phase noise (EEPN). This, in turns, leads to an analytic BER specification. Numerical results focus on a CO-OFDM system with 10-25 GS/s QPSK channel modulation. A worst case constellation configuration is identified for the phase noise influence and the resulting BER is compared to the BER of a conventional single channel QPSK system with the same capacity as the CO-OFDM implementation. Results are evaluated as a function of transmission distance. For both types of systems, the phase noise variance increases significantly with increasing transmission distance. For a total capacity of 400 (1000) Gbit/s, the transmission distance to have the BER < 10 −2 for the worst case CO-OFDM design is less than 800 and 460 km, respectively, whereas for a single channel QPSK system it is less than 1400 and 560 km.

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“…The crosstalk level depends on the spacing of optical channels. XPM may generate significant amounts of nonlinear crosstalk between adjacent SCM channels because they are very closely spaced [2][3][4]. For analogue CATV transmissions in the 1500 nm window using normal single mode fiber, it is shown that the number of achievable optical channels is severely limited by cross-phase modulation for typical system parameters [3].…”

Section: Introductionmentioning

confidence: 99%

“…XPM may generate significant amounts of nonlinear crosstalk between adjacent SCM channels because they are very closely spaced [2][3][4]. For analogue CATV transmissions in the 1500 nm window using normal single mode fiber, it is shown that the number of achievable optical channels is severely limited by cross-phase modulation for typical system parameters [3]. Further, a SCM-DWDM system is reported to investigate the transmission limitations due to XPM at wavelength spacing of 50 and 100 GHz [5] and at narrow channel spacing [6], but without considering the HOD.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of XPM Induced Crosstalk under the Impact of Higher Order Dispersion (HOD) in SCM-WDM Transmission Link

Sharma¹,

Kaur²,

Singh³

2012

J. Opt. Commun.

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In this work, an effort has been attempted for the comprehensive theoretical analysis to evaluate the impact of higher order dispersion (HOD) coefficients on non-linear crosstalk in SCM-WDM communication systems. The results are obtained to compute the interchannel crosstalk due to XPM fiber nonlinearity under the individual influence of 2OD-, 3OD-, 4OD-and 5OD-coefficient at different modulation frequencies. The results are reported at varied values of optical span and input channel power, as these both parameters enhance the amount of crosstalk due to fiber nonlinearity in the SCM-WDM systems. This work is also carried out by taking into consideration of the different values of modulation index and walk-off parameter.

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Effects of cross-phase modulation in wavelength-multiplexedSCMvideo transmission systems

Cited by 51 publications

References 3 publications

Four-directional Transport of AM-VSB CATV System over 80-km Large Effective Area Fiber

Four-directional Transport of AM-VSB CATV System over 80-km Large Effective Area Fiber

Phase Noise Influence in Long-range Coherent Optical OFDM Systems with Delay Detection, IFFT Multiplexing and FFT Demodulation

Theoretical Investigation of XPM Induced Crosstalk under the Impact of Higher Order Dispersion (HOD) in SCM-WDM Transmission Link

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