Tunable narrow-band single-channel add-drop integrated optical filter with ultrawide FSR

作     者：Chunlei Sun Yuexin Yin Zequn Chen Yuting Ye Ye Luo Hui Ma Lichun Wang Maoliang Wei Jialing Jian Renjie Tang Hao Dai Jianghong Wu Junying Li Daming Zhang Hongtao Lin Lan Li 

作者机构：Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang ProvinceSchool of EngineeringWestlake UniversityHangzhou 310024China Institute of Advanced TechnologyWestlake Institute for Advanced StudyHangzhou 310024China State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012China Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang ProvinceCollege of Information Science and Electronic EngineeringZhejiang UniversityHangzhou 310027China School of MicroelectronicsZhejiang UniversityHangzhou 310027China. 

出 版 物：《PhotoniX》 (智汇光学（英文）)

年 卷 期：2022年第3卷第1期

页      面：312-323页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：National Key Research and Development Program of China(2019YFB2203003) National Natural Science Foundation of China(62175202 and 91950204) Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(2020R01005) the Open Research program of Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province Westlake University(the start-up fund of Westlake University) 

主　　题：Integrated devices Silicon photonics Optical filters FSR-free filters Tunable filters 

摘      要：Free-spectral-range(FSR)-free optical filters have always been a critical challenge for photonic integrated circuits.A high-performance FSR-free filter is highly desired for communication,spectroscopy,and sensing *** significant progress in integrated optical filters,the FSR-free filter with a tunable narrow-band,high out-of-band rejection,and large fabrication tolerance has rarely been *** this paper,we propose an exact and robust design method for add-drop filters(ADFs)with an FSR-free operation capability,a sub-nanometer optical bandwidth,and a high out-of-band rejection(OBR)*** achieved filter has a 3-dB bandwidth of0.5 nm and an OBR ratio of 21.5 dB within a large waveband of 220 nm,which to the best of our knowledge,is the largest-FSR ADF demonstrated on a silicon photonic *** filter exhibits large tunability of 12.3 nm with a heating efficiency of 97 pm/mW and maintains the FSR-free feature in the whole tuning *** addition,we fabri-cated a series of ADFs with different periods,which all showed reliable and excellent performances.