title: Bandwidth and wavelength-tunable optical bandpass filter based on silicon microring-MZI structure.
abstract: A novel and simple bandwidth and wavelength-tunable optical bandpass filter based on silicon microrings in a Mach-Zehnder interferometer (MZI) structure is proposed and demonstrated. In this filter design, the drop transmissions of two microring resonators are combined to provide the desired tunability. A detailed analysis and the design of the device are presented. The shape factor and extinction ratio of the filter are optimized by thermally controlling the phase difference between the two arms of the MZI. Simultaneous bandwidth and wavelength tunability with in-band ripple control is demonstrated by thermally tuning the resonance offset between the two microring resonators.
authors: Wuhan National Laboratory for Optoelectronics, School of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China.
authors: Yunhong
authors: Y
authors: Ding
authors: Minhao
authors: M
authors: Pu
authors: Liu
authors: L
authors: Liu
authors: Jing
authors: J
authors: Xu
authors: Christophe
authors: C
authors: Peucheret
authors: Xinliang
authors: X
authors: Zhang
authors: Dexiu
authors: D
authors: Huang
authors: Haiyan
authors: H
authors: Ou
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008904:Miniaturization; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry*
chemical_list: D012825:Silicon