Abstract: Microresonators, such as a microsphere resonators and planar microresonators, are optically coupled to waveguides for input and output of light. It is important that the relative positions of the microresonator and the waveguide are maintained stable, while still maintaining high cavity Q and ease of launching and extracting the optical beams. Structures are provided on a substrate that are useful for maintaining the position of the microresonator relative to the waveguide. The structures provide for vertical or horizontal coupling between the waveguide and the microresonator.

Abstract: A method for making a plurality of waveguide resonator devices is disclosed herein. The method includes fixing a precursor resonator structure relative to a plurality of waveguides. The method also includes dividing the precursor resonator structure into a plurality of separate resonators after the precursor resonator structure has been fixed relative to the waveguides. The precursor resonator structure is divided at locations between the waveguides.

Abstract: A curved printed circuit board is made in accordance with a method which ensures accurate registration between printed circuit patterns carried by the two outer surfaces of the board.