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Crosstalk Tolerance of Direct Detection DPSK Optical Systems in Presence of Receiver Imperfections

Cancela, L. ; Pires, J. J. O.

IET Optoelectronics Vol. 6, Nº 2, pp. 94 - 101, April, 2012.

ISSN (print): 1751-8768
ISSN (online):

Scimago Journal Ranking: 0,66 (in 2012)

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An analytical method, based on the knowledge of the moment generating function of the decision variable, which permits to assess the in-band crosstalk tolerance of direct detection differential phase-shift keying (DPSK) optical systems with receiver imperfections relatively to conventional on-off keying (OOK) systems is presented. It is shown that the crosstalk tolerance of DPSK systems can be greatly reduced or even disappear when the receiver imperfections are taken into account.