Abstract
A design for enhancing the quality () factor of a photonic crystal ring resonator (PCRR) is introduced. The highest factor based on simulations is 121,000. The analysis of momentum space distributions of the electric field profile for PCRR resonance shows that a high factor of a PCRR is attributed to the reduction of tangential -vector component inside the leaky region. A high factor of 75,200 is experimentally demonstrated for a modified PCRR on a silicon-on-insulator wafer. The high--factor PCRR demonstrated here will be beneficial for channel drop filters, lasers, sensors, and other applications.
© 2014 Optical Society of America
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