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Proceedings Paper

Impact of phase noise, chromatic dispersion, and nonlinear effects on 10-Gb/s optical differential quadrature phase shift keying (oDQPSK) systems
Author(s): Joan Manel Gene; Marcal Soler; Albert Cabre; Robert I. Killey; Josep J. Prat
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Paper Abstract

The impact of phase noise, chromatic dispersion and non-linear effects on a 10 Gb/s Optical Differential Quaternary Phase Shift Keying (oDQPSK) system has been evaluated by means of computer simulation. Both single channel and multiple WDM channels have been considered. The results show that these systems present a high spectral efficiency that allows a reduced channel spacing as low as 25 MHz. Furthermore, this effect leads to an increase on dispersion tolerance together with a non-linear effects robustness due to the signal constant envelope characteristics. Finally, some relevant results have been found concerning the laser linewidth requirements (less than 10 MHz). Simulations show that phase noise can be the limiting factor of oDQPSK systems.

Paper Details

Date Published: 19 August 2003
PDF: 8 pages
Proc. SPIE 5247, Optical Transmission Systems and Equipment for WDM Networking II, (19 August 2003); doi: 10.1117/12.511170
Show Author Affiliations
Joan Manel Gene, Univ. Politecnica de Catalunya (Spain)
Marcal Soler, Univ. Politecnica de Catalunya (Spain)
Albert Cabre, Univ. Politecnica de Catalunya (Spain)
Robert I. Killey, Univ. College London (United Kingdom)
Josep J. Prat, Univ. Politecnica de Catalunya (Spain)


Published in SPIE Proceedings Vol. 5247:
Optical Transmission Systems and Equipment for WDM Networking II
Benjamin B. Dingel; Werner Weiershausen; Achyut K. Dutta; Ken-Ichi Sato, Editor(s)

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