title: High-quality-factor photonic crystal ring resonator.
abstract: A design for enhancing the quality (Q) factor of a photonic crystal ring resonator (PCRR) is introduced. The highest Q 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 Q factor of a PCRR is attributed to the reduction of tangential k-vector component inside the leaky region. A high Q factor of 75,200 is experimentally demonstrated for a modified PCRR on a silicon-on-insulator wafer. The high-Q-factor PCRR demonstrated here will be beneficial for channel drop filters, lasers, sensors, and other applications.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Cheng
authors.initials: C
authors.lastname: Zeng
authors.forename: Danping
authors.initials: D
authors.lastname: Li
authors.forename: Ge
authors.initials: G
authors.lastname: Gao
authors.forename: Zengzhi
authors.initials: Z
authors.lastname: Huang
authors.forename: Jinzhong
authors.initials: J
authors.lastname: Yu
authors.forename: Jinsong
authors.initials: J
authors.lastname: Xia