Title :
Optically Tunable Delay Line in Silicon Microring Resonator Based on Thermal Nonlinear Effect
Author :
Liu, Fangfei ; Li, Qiang ; Zhang, Ziyang ; Qiu, Min ; Su, Yikai
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai
Abstract :
We experimentally demonstrate optically tunable delay line in a silicon microring resonator with a 20- m radius. The delay-tuning mechanism is based on the red shift of the resonance induced by thermal nonlinear effect. We investigate the delay performance of three modulation formats-non-return-to-zero (NRZ), return-to-zero (RZ), and differential phase-shift keying (DPSK) signals at different data rates. Tunable delay is achieved by controlling the power of the continuous-wave (CW) pump with very low tuning threshold, which could be used in microring-resonator-based slow-light structure.
Keywords :
differential phase shift keying; elemental semiconductors; integrated optoelectronics; micro-optics; optical communication equipment; optical delay lines; optical resonators; optical tuning; red shift; silicon; DPSK; Si; continuous-wave pump; delay-tuning mechanism; differential phase-shift keying; microring-resonator-based slow-light structure; nonreturn-to-zero modulation; optically tunable delay line; red shift; return-to-zero modulation; silicon microring resonator; thermal nonlinear effect; Delay effects; Delay lines; Nonlinear optics; Optical modulation; Optical pumping; Optical resonators; Optical signal processing; Phase modulation; Resonance; Silicon; Buffer; microring resonator; silicon photonics; thermal nonlinear effect;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2008.916240
