On the simulation of digital optical links with EDFA's: an accurate method for estimating BER through Gaussian approximation

Lima, Rodolfo A. A.; Carvalho, M.C.R.; Conrado, Luiz Fernando M.

doi:10.1109/2944.649537

Cited by 15 publications

(5 citation statements)

References 9 publications

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“…The shot noise, beat noises generated by signal and amplified spontaneous emission (ASE) noise, and the receiver circuit noise were considered in the calculation of BER, which was optimized with both threshold level and sampling time [8]. BER was calculated from the Gaussian approximation.…”

Section: Simulation Model Of Optical Fiber Receiver Mux/demux mentioning

confidence: 99%

Transmission Performance of 40 Gb/s PM Duobinary Signals due to Fiber Nonlinearities in DWDM Systems Using VSB Filtering Techniques

Jang¹,

Kim²,

Lee³

et al. 2009

Journal of the Optical Society of Korea

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We investigate theoretically the tolerance of 40 Gbps phase-modulated (PM) duobinary signals using a vestigial sideband (VSB) filter on impairments which occurred in dense wavelength-division multiplexing (DWDM) systems, compared to the conventional duobinary signals. Our simulation results show that PM duobinary signals can t have the gain on the spectral efficiency achieved ' by utilizing the VSB filtering technique. In order to increase the spectral efficiency, they indispensably require to be transmitted at the optimum bandwidth of multiplexer (MUX) and demultiplexer (DEMUX) since they are susceptible to inter-channel crosstalk. It is also shown that the PM duobinary modulation format has a large tolerance on self-phase modulation (SPM) and cross-phase modulation (XPM) under the condition which MUX and DEMUX have been tuned at an optimum bandwidth; it has 1.2 dB power penalty at the fiber launching power (FLP) of 15 dBm and the channel spacing of 50 GHz.

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Section: Simulation Model Of Optical Fiber Receiver Mux/demux mentioning

confidence: 99%

Transmission Performance of 40 Gb/s PM Duobinary Signals due to Fiber Nonlinearities in DWDM Systems Using VSB Filtering Techniques

Jang¹,

Kim²,

Lee³

et al. 2009

Journal of the Optical Society of Korea

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“…The chromatic dispersion in the Theoretical Investigation of First-order and Second-order … -Hodeok Jang et al SSMF with the fiber length of 80km was compensated by the DCF with a fiber length of 15.72 km. The first EDFA was used to adjust power of the input signal launched into the SSMF and the second EDFA was used to compensate a loss in the DCF [9], [10]. The receiver model consists of an optical amplifier, followed by a Gaussian band-pass optical filter, a square law detector, and a fifth-order Bessel-Thomson electrical filter.…”

Section: Wave Propagation In Optical Fibers In the Presence Of Pmdmentioning

confidence: 99%

“…The receiver model consists of an optical amplifier, followed by a Gaussian band-pass optical filter, a square law detector, and a fifth-order Bessel-Thomson electrical filter. The shot noise, beat noises generated by signal and amplified spontaneous emission (ASE) noise, and the receiver circuit noise are considered in the calculation of bit error rates (BER), which was optimized with both threshold level and sampling time [9]. The receiver sensitivity at 10 -9 BER was used to measure the PMD-induced penalty.…”

Section: Wave Propagation In Optical Fibers In the Presence Of Pmdmentioning

confidence: 99%

Theoretical Investigation of First-order and Second-order Polarization-mode Dispersion Tolerance on Various Modulation Formats in 40 Gb/s Transmission Systems with FEC Coding

Jang¹,

Kim²,

Lee³

et al. 2009

Journal of the Optical Society of Korea

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We investigated the polarization-mode dispersion (PMD) tolerance for 40Gb/s non-return to zero (NRZ), duobinary NRZ, return to zero (RZ), carrier-suppressed RZ (CS-RZ), and duobinary-carriersuppressed RZ (DCS-RZ) modulation formats with a forward error correction (FEC) coding. The power penalty has been calculated as a measure of the system performance due to PMD. After comparison of the PMD tolerance of various modulation formats, our results suggest that RZ signals have the best tolerance against the effect of first-order PMD only. The duobinary NRZ modulation format is most resilient to PMD when both first-and second-order PMD are considered. However, the duobinary NRZ modulation format is the most sensitive to the incident angle of the input signal to a fiber axis in the presence of first-and second-order PMD, leading to incident angledependent power penalty. The coding gain by FEC can cope with the power penalties induced by first-and second-order PMD up to a DGD value of 16ps.

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“…The shot noise, beat noises generated by signals and amplified spontaneous emission (ASE) noise, and the receiver circuit noise were considered in the calculation of BER, which was optimized with both threshold level and sampling time [8]. BER was calculated from the Gaussian approximation.…”

Section: Simulation Modelingmentioning

confidence: 99%

Investigation on transmission characteristics of 10Gb/s phase-modulated duobinary in optical networks

Jang¹,

Hur²,

Jeong³

2006

SPIE Proceedings

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This paper describes the transmission performance of the 10Gb/s phase-modulated (PM) duobinary modulation format, compared with the conventional duobinary modulation format using a low-pass filter (LPF) in cascaded optical networks. We theoretically investigate the transmission characteristics of both modulation formats with considering the effect of narrowing bandwidth of multiplexers (MUX) and demultiplexers (DEMUX) at cascaded nodes with different fiber launching powers (FLP). It's shown that PM duobinary signals, at the FLP of 9dBm, can be transmitted over 3 nodes (up to a distance of 1,200km) with only 1.25dB power penalty.

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On the simulation of digital optical links with EDFA's: an accurate method for estimating BER through Gaussian approximation

Cited by 15 publications

References 9 publications

Transmission Performance of 40 Gb/s PM Duobinary Signals due to Fiber Nonlinearities in DWDM Systems Using VSB Filtering Techniques

Transmission Performance of 40 Gb/s PM Duobinary Signals due to Fiber Nonlinearities in DWDM Systems Using VSB Filtering Techniques

Theoretical Investigation of First-order and Second-order Polarization-mode Dispersion Tolerance on Various Modulation Formats in 40 Gb/s Transmission Systems with FEC Coding

Investigation on transmission characteristics of 10Gb/s phase-modulated duobinary in optical networks

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