INJECTION LOCKING OF LEAKY-WAVE COUPLED RESONANT OPTICAL WAVE-GUIDE ARRAYS

Injection locking of mutually coupled resonant antiguided arrays, consisting of up to four ten-element arrays, has been demonstrated. External injection causes single-longitudinal mode operation, and enhanced phase-locking of the coupled arrays. The injected signal is distributed via leaky-wave coupling, so that the master-oscillator signal injected into one element (3 mum) of one array locks the whole array ensemble (223 mum wide aperture). Wavelength tuning is achieved over a 12 angstrom spectral range for two coupled arrays, and has no impact on the coupled array far-field pattern.