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Influence of IF-filtering on bit error rate floor in coherent optical DPSK-systems

	IEE proceedings. Part J 135 (1988), No.5, pp.355-358 ISSN: 0267-3932

	English
	Journal Article
	Fraunhofer HHI ()
	optical links; optical modulation; phase shift keying; signal detection; spatial filters; delay phase shift keying; if-filtering; bit error rate floor; coherent optical dpsk-systems

Abstract
The authors investigate the influence of IF-filtering on the bit error rate floor in optical DPSK-systems; this influence is usually neglected. They show that the IF-filtering leads to a reduction of the error rate floor, so that the linewidth requirements are reduced by a factor of 0.68.

: http://publica.fraunhofer.de/documents/N-13881.html