IMPEDANCE MATCHING OF ALL-FIBER RESONATORS

The effect of loss on a twin 2 x 2 coupler fibre resonator is to limit the amount of light that is coupled into the resonator. We present a numerical analysis and experimental data which show that the amount of light that is coupled into the initial resonator can be increased by the addition of a secondary resonator containing a single 2 x 2 couple r. We show that by a suitable choice of the coupling ratio of the addi tional 2 x 2 coupler all the light incident on the composite resonator can be coupled into the composite resonator.