Grating Based Optical Parametric Oscillator and Method of Dynamically Tuning the Oscillator for Generating Desired Optical Signals

An apparatus to generate a desired optical signal comprising:

• an optical oscillator including:
• at least one optical medium to produce optical medium signals with first and second wavelengths in response to an optical signal with a third wavelength traversing said at least one optical medium;
• a grating to produce a grating optical signal, wherein each angular orientation of said grating relative to a longitudinal axis of said optical oscillator produces said grating optical signal with a different wavelength range;
• an optical element disposed between said grating and said at least one optical medium to direct corresponding optical signals toward said grating and said at least one optical medium, wherein said corresponding optical signals include said grating optical signal and said optical medium signals;
• a coupler coupled to said at least one optical medium to emit said desired optical signal from said optical oscillator with a desired linewidth and a wavelength of at least one of said first and second wavelengths;
• and
• a plurality of rotating assemblies to rotate said grating and each said at least one optical medium to tune said optical oscillator to generate said desired optical signal.