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Optimized Optical Filtering for 40 Gb/s/Channel Optical Differential Quadrature Phase Shift Key (DQPSK), in DWDM Systems for Acces Network


Affiliations
1 Department of Electronics, University of Djilali Liabes, Sidi Bel-Abbes, Algeria
2 Department C2S2, XLIM - UMR CNRS n°7252, Limoges, France
 

The optimization of multiplexing (MUX) and demultiplexing (DMUX) 3-dB filter bandwidths for the optical differential quadrature phase shift key (DQPSK) combined with the return-to-zero (RZ) and carrier-suppressed returnto-zero (CS-RZ) is performed. The study of different optical signals in the 40 Gb/s dense wavelength division multiplexing (DWDM) system, with high spectral efficiency, is shown to be achievable with different filter types for access network. Performances of MUX and DMUX with different filter bandwidth is analyzed to get the best system performance for 40 Gbs/s DWDM transmission system with high spectral efficiency. The limitations imposed by misalignment of filters are also discussed.

Keywords

Optical Differential Quadrature Phase Shift Key (DQPSK), Dense Wavelength Division Multiplexing (DWDM), Misalignment, Optical Filter, Bessel, Butterworth.
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  • Optimized Optical Filtering for 40 Gb/s/Channel Optical Differential Quadrature Phase Shift Key (DQPSK), in DWDM Systems for Acces Network

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Authors

S. Benameur
Department of Electronics, University of Djilali Liabes, Sidi Bel-Abbes, Algeria
M. Kandouci
Department of Electronics, University of Djilali Liabes, Sidi Bel-Abbes, Algeria
C. Aupetit-Berthelemot
Department C2S2, XLIM - UMR CNRS n°7252, Limoges, France

Abstract


The optimization of multiplexing (MUX) and demultiplexing (DMUX) 3-dB filter bandwidths for the optical differential quadrature phase shift key (DQPSK) combined with the return-to-zero (RZ) and carrier-suppressed returnto-zero (CS-RZ) is performed. The study of different optical signals in the 40 Gb/s dense wavelength division multiplexing (DWDM) system, with high spectral efficiency, is shown to be achievable with different filter types for access network. Performances of MUX and DMUX with different filter bandwidth is analyzed to get the best system performance for 40 Gbs/s DWDM transmission system with high spectral efficiency. The limitations imposed by misalignment of filters are also discussed.

Keywords


Optical Differential Quadrature Phase Shift Key (DQPSK), Dense Wavelength Division Multiplexing (DWDM), Misalignment, Optical Filter, Bessel, Butterworth.