Wavelength conversions using ring resonator with quasi-phase-matched waveguide and optical amplifier

We propose a new scheme using ring resonator for wavelength conversions. In this scheme, intense pump light is provided by a ring laser, and efficient conversion is achieved by using ring resonate structure. Conversions from 1.5 to 0.7 /spl mu/m-band wavelengths based on sum-frequency generation are demonstrated.