Cq. Xu et al., 2ND-HARMONIC GENERATION USING A FIBER RING-RESONATOR WITH A LINBO3 WAVE-GUIDE AND A SEMICONDUCTOR OPTICAL AMPLIFIER, Applied physics letters, 69(15), 1996, pp. 2154-2156
Optical second-harmonic generation (SHG) using a fiber ring resonator
has been demonstrated. A LiNbO3 waveguide with a periodically domain i
nverted structure and a semiconductor optical amplifier were used as t
he nonlinear and gain media, respectively. The quasiphase-matched cond
ition was satisfied simply by tuning an optical bandpass filter in the
resonator. SHG was enhanced by a factor of 280. (C) 1996 American Ins
titute of Physics.