Fj. Frailepelaez et al., LOW-THRESHOLD OPTICAL DIFFERENTIAL AMPLIFICATION USING A FIBER AMPLIFIER IN A NONLINEAR RING-RESONATOR, Electronics Letters, 29(14), 1993, pp. 1249-1251
The basis for low threshold differential amplification in a nonlinear
fibre resonator by incorporating an in-line fibre amplifier in the cav
ity is reported.