Optical clock generation and carrier extraction techniques using 790 nm self-pulsating laser diodes

Author

Walker, S.D.

Author_Institution

Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK

fYear

1990

fDate

33172

Firstpage

42614

Lastpage

42617

Abstract

Self-pulsating laser diodes (SP-LD) emitting at 790 nm wavelength have found widespread application as low-noise, low-cost optical sources in compact disc (CD) systems. The requisite immunity to reflection-induced noise is obtained by gigahertz frequency self-pulsation of the laser emission coupled with significant chirping of each Fabry-Perot mode. It is the resultant low-coherence of the optical output which reduces CD reflection noise. Subsequent work has shown that the SP-LD characteristics as described by Poh (1985) predict a pronounced modulation transfer function nonlinearity at the self-pulsation frequency and also well-defined injection-locking behaviour. These effects are exploited in the experimental work described

Keywords

carrier communication; clocks; laser mode locking; optical communication equipment; optical transfer function; semiconductor junction lasers; 790 nm; CD; Fabry-Perot mode; carrier extraction; chirping; compact disc; injection-locking; laser emission; modulation transfer function nonlinearity; noise immunity; optical clock generation; reflection noise; self-pulsating laser diodes; self-pulsation frequency;

fLanguage

English

Publisher

iet

Conference_Titel

Microwave Optoelectronics, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

190732