Title :
On the Q factor inaccuracy in the performance analysis of optical direct-detection DPSK systems
Author :
Bosco, G. ; Poggiolini, P.
Author_Institution :
Dipt. di Elettronica, Politecono di Torino, Italy
Abstract :
In this letter, we analyze the validity of the use of the Q parameter evaluation in the study of the bit-error-rate (BER) performance of direct-detection differential phase-shift keying optical systems. We show that the inaccuracy of the estimate of the BER based on the Q factor can be very large.
Keywords :
Mach-Zehnder interferometers; Q-factor; differential phase shift keying; error statistics; optical fibre communication; optical modulation; optical receivers; BER; Q factor inaccuracy; bit-error-rate; differential phase-shift keying; optical direct-detection DPSK systems; performance analysis; Bit error rate; Computer simulation; Differential phase shift keying; Differential quadrature phase shift keying; Intersymbol interference; Optical filters; Optical interferometry; Optical modulation; Optical receivers; Performance analysis;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.820475
