No abstract

No abstract

This article describes a theoretical dynamic analysis of a fibre-optic ring resonator (FORR) when excited by a sinusoidally-modulated laser diode (LD). The results are given for different conditions of the resonator, namely, modulating frequency, amplitude modulation index, power coupling coefficient of coupler, loop delay time τ and the phase angle between FM and AM response of the LD. When the modulation frequency f m exceeds a limiting value, such that f mτ is greater than about 0.0002, the output response deviates from steady state and exhibits an oscillatory behaviour with overshoots. Also, when the value of f mτ becomes greater than one, the response does not show any resonance in the ring and the output approximates to the intensity modulation of the LD. An unknown FM characteristic of a given LD can be determined from the ring resonator response.

No abstract

No abstract