Investigation of 10-Gb/s optical DQPSK systems in presence of chromatic dispersion, fiber nonlinearities, and phase noise

Gené, Joan M.; Soler, M.; Killey, RI; Prat, Josep

doi:10.1109/lpt.2004.823698

Cited by 17 publications

(12 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, this can be overcome by the use of different phase shift keying (DPSK) techniques. DPSK can be implemented using parallel MZIMs [13] and M-ary DPSK can be implemented using only one dual drive LN MZIM [14].…”

Section: Phase Modulationmentioning

confidence: 99%

Lithium niobate optical modulators: Devices and applications

Bình

2006

Journal of Crystal Growth

View full text Add to dashboard Cite

Section: Phase Modulationmentioning

confidence: 99%

Lithium niobate optical modulators: Devices and applications

Bình

2006

Journal of Crystal Growth

View full text Add to dashboard Cite

“…In any case, the eye remains opened enough under the simulated conditions so as to correctly detect the transmitted data. In order to compare the performance of the proposed system with other advanced quaternary systems, some simulations were done using an optical differential quadrature phase-shift keying (ODQPSK) modulated system [8]. The ODQPSK format is more robust toward chromatic dispersion and PMD but our proposal is much more tolerant to phase noise.…”

Section: Simulation Resultsmentioning

confidence: 99%

Quaternary optical transmission system combining phase and polarization-shift keying

Comellas

Gené

Prat

2004

IEEE Photon. Technol. Lett.

Self Cite

View full text Add to dashboard Cite

Abstract-A new optical transmission scheme which combines polarization-shift keying and differential phase-shift keying on the same optical carrier is proposed. Simulations carried out show a considerable tolerance toward different physical impairments, such as polarization-mode dispersion, nonlinear effects, and chromatic dispersion. When compared to other multilevel modulation formats, it shows the advantage of reusing the carrier power, thus, sensitivity is improved.

show abstract

“…and expanding ψ(s) around the zero threshold, the tail function (14) can be reduced to a Gaussian integral. This leads to the approximation…”

Section: Dqpsk System Modelmentioning

confidence: 99%

“…However, as in the case of incoherent delay demodulation and direct detection for binary DPSK, phase noise imposes a limit on the system. Recently, published simulation results [14] for the binary DPSK system show a receiver-sensitivity penalty degradation up to 5 dB, even in the back-to-back configuration, as the linewidth increases from 0 to 15 MHz (5-GBd system). The BER penalty was also examined in [15] using analytical approximations; however, BER floor levels were not examined and the effect of optical filtering was neglected.…”

mentioning

confidence: 99%

Performance evaluation of optical DQPSK using saddle point approximation

Avlonitis

Yeatman

2006

J. Lightwave Technol.

View full text Add to dashboard Cite

Abstract-In this paper, the authors derive the moment generating function (MGF) of the decision variable for a practical optical differential quadrature phase shift keying (DQPSK) receiver affected by phase noise and the amplifier spontaneous emission noise. The effect of the different optical filters, Gaussian, Fabry-Pérot (FP), and optical integrator, on the phase noise is examined. Using the saddle point approximation, the authors obtain numerically the bit error rate (BER) for the above system, as a function of the optical-signal-to-noise ratio (OSNR) and the source linewidth. The model is found to agree with previous published simulation results and the Monte Carlo simulations presented in this paper. The authors also calculate the BER floors for DQPSK inflicted by the phase noise and compare its performance with differential phase shift keying (DPSK). Finally, the authors examine the effect of interferometric demodulation on the relative intensity noise (RIN) spectra and the impact on the DQPSK system performance. In particular, the authors examine the influence of system dispersion on the receiver sensitivity.Index Terms-Differential phase shift keying (DPSK), moments method, optical communication.

show abstract

Investigation of 10-Gb/s optical DQPSK systems in presence of chromatic dispersion, fiber nonlinearities, and phase noise

Cited by 17 publications

References 5 publications

Lithium niobate optical modulators: Devices and applications

Lithium niobate optical modulators: Devices and applications

Quaternary optical transmission system combining phase and polarization-shift keying

Performance evaluation of optical DQPSK using saddle point approximation

Contact Info

Product

Resources

About