NDLI: Performance evaluation of optical DQPSK using saddle point approximation

Content Provider	IEEE Xplore Digital Library
Author	Avlonitis, N.S. Yeatman, E.M.
Copyright Year	1983
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-Peacuterot (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
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1176
Ending Page	1185
Page Count	10
File Size	283843
File Format	PDF
ISSN	07338724
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical noise Optical filters Optical receivers Stimulated emission Optical interferometry Optical sensors Phase noise Bit error rate Differential quadrature phase shift keying Semiconductor optical amplifiers optical communication Differential phase shift keying (DPSK) moments method
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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