Title :
Analysis of the automatic frequency control in heterodyne optical receivers
Author :
Bononi, Alberto ; Ghiggino, Pierpaolo ; Picchi, Giorgio
Author_Institution :
Dipartimento di Ingegneria dell´´Inf., Parma Univ., Italy
fDate :
6/1/1992 12:00:00 AM
Abstract :
A theoretical analysis of the automatic frequency control (AFC) in binary DPSK and FSK heterodyne optical receivers is presented, and its impact on the system performance is evaluated. The effects of the shot-noise AM/FM conversion in the frequency discriminator are analyzed. It is shown that with commercial DFB lasers a common analysis of the frequency control loop can be done for the three modulations considered. Design guidelines are given that account for the presence of the AFC loop by properly using some performance results derived in the assumption of perfect frequency tracking
Keywords :
automatic frequency control; demodulation; feedback; frequency shift keying; optical communication equipment; optical modulation; receivers; AFC; AFC loop; AM/FM conversion; FSK heterodyne optical receivers; automatic frequency control; binary DPSK; commercial DFB lasers; frequency control loop; frequency discriminator; heterodyne optical receivers; perfect frequency tracking; semiconductor diode lasers; shot-noise; system performance; Automatic frequency control; Control systems; Differential quadrature phase shift keying; Frequency shift keying; Optical control; Optical mixing; Optical receivers; Optical variables control; Performance analysis; System performance;
Journal_Title :
Lightwave Technology, Journal of
