2021/03/14 by H. Arianfard, Hamed Arianfard, Jiayang Wu +5
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Chebyshev filter #Computer science #Coupled mode theory #Electronic engineering #Engineering #Materials science #Optical Network Technologies #Optical filter #Optics #Photonic and Optical Devices #Photonics #Physics #Refractive index #Resonator #physics.app-ph #physics.optics
paper · pdf · doi:10.1109/jlt.2021.3066256
published as Journal of Lightwave Technology, vol. 39 Early Access (2021) · 12 pages, 12 figures, 178 references
arxiv created 2021/03/14 · openalex publication_date 2021/03/14 · arxiv updated 2021/03/16 · openalex created_date 2021/03/29 · openalex updated_date 2026/08/05
We theoretically investigate advanced multi-functional integrated photonic filters formed by three waveguide coupled Sagnac loop reflectors (3WC-SLRs). By tailoring the coherent mode interference, the spectral response of the 3WC-SLR resonators is engineered to achieve diverse filtering functions with high performance. These include optical analogues of Fano resonances that yield ultrahigh spectral extinction ratios (ERs) and slope rates, resonance mode splitting with high ERs and low free spectral ranges, and classical Butterworth, Bessel, Chebyshev, and elliptic filters. A detailed analysis of the impact of the structural parameters and fabrication tolerances is provided to facilitate device design and optimization. The requirements for practical applications are also considered. These results theoretically verify the effectiveness of using 3WC-SLR resonators as multi-functional integrated photonic filters for flexible spectral engineering in diverse applications.