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“數(shù)理講堂”2025年第01期:FAME: A Fast Simulation Algorithm for 3D Photonic Crystals

發(fā)布時間:2024-12-30 供稿:數(shù)理與統(tǒng)計學(xué)院 分享至:

主題:FAME: A Fast Simulation Algorithm for 3D Photonic Crystals

時間:1月2日 14:50-16:50

地點:騰訊會議(會議號:544-308-841)

主持人:邵文婷副教授

報告人簡介:

李鐵香,,東南大學(xué)教授,博士生導(dǎo)師,,東南大學(xué)丘成桐中心主任助理,,南京應(yīng)用數(shù)學(xué)中心主任助理,江蘇省“青藍(lán)工程”中青年學(xué)術(shù)帶頭人,,南京應(yīng)用數(shù)學(xué)中心—鼓樓醫(yī)院醫(yī)學(xué)影像聯(lián)合實驗室執(zhí)行主任,。主要從事大規(guī)模矩陣計算、電磁計算,、計算幾何及醫(yī)學(xué)影像處理等方向研究,,主持國家級項目6項,已經(jīng)在 SISC,、SIIMS,、SIMAX、ACM TOMS,、JCP,、Inverse Problems 等國際高水平期刊發(fā)表學(xué)術(shù)論文60余篇。獲得2017年和2019年世界華人數(shù)學(xué)家聯(lián)盟最佳論文獎—“若琳獎”,,2020年江蘇省工業(yè)與應(yīng)用數(shù)學(xué)學(xué)會青年獎,。

講座簡介:

This work presents a fast algorithm, FAME, to calculate the band structures of 3D photonic crystals with supercell structures and perfect electric conductor and quasi-periodic mixed boundary conditions. The oblique Yee finite difference method is used to discretize the frequency-domain source-free Maxwell's equations uniformly with different Bravais lattices. We derive the explicit singular value decomposition (SVD) of the discrete curl operator by leveraging the SVD of the discrete differential operator in each direction, in which the FFT structure is implied. Numerical experiments are conducted to demonstrate the efficacy and effectiveness of FAME, and surface state phenomena of 3D photonic crystals with gyroid supercell structures are realized.

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