3 WAVE MIXING USING A FIBER RING-RESONATOR

Three wave mixing using a fiber ring resonator scheme is discussed, an d experimental results are presented. In this scheme, an optical nonli near medium is placed into the fiber ring laser cavity, and a semicond uctor optical amplifier and a tunable optical band pass filter (TOBPF) are used as the gain medium and lasing wavelength selector. The phase -matching condition, which is necessary for efficient wave mixing, can easily be satisfied by tuning the TOBPF. Second-harmonic generation ( SHG) and sum-frequency generation (SFG) were demonstrated using a LiNb O3 waveguide with a periodically domain inverted structure. Enhancemen ts of SHG and SFG were achieved. (C) 1997 American Institute of Physic s.