SILICON-BASED OPTICAL MICRO-RING FILTER REVERSE DESIGN METHOD BASED ON SPARSITY CALCULATION

WIPO Patent Application WO/2023/240772

A1

A silicon-based optical micro-ring filter reverse design method based on sparsity calculation, comprising: S1, determining an initial radius of each micro-ring in a cascaded micro-ring filter and each coupling coefficient of the cascaded micro-ring filter; S2, according to the initial radius and the coupling coefficient, obtaining a transmission spectrum of the cascaded micro-ring filter using a transmission matrix method; S3, calculating the sparsity of the cascaded micro-ring at different frequency points, and performing summation; and S4, on the basis of the sparsity obtained by summation, iterating the micro-ring radius according to an optimization target having maximum sparsity, recalculating the coupling coefficient using the iterated micro-ring radius, and returning to step S2, until a maximum number of iterations is reached, obtaining a final micro-ring radius and coupling coefficient. A micro-ring structure is designed according to the design target. Flexibility in designing a silicon-based cascaded micro-ring filter is increased, and design efficiency of the filter is increased.

LIU NING (CN)
CHEN YU (CN)

PCT/CN2022/110582

December 21, 2023

August 05, 2022

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UNIV SOOCHOW (CN)

G02B27/00; G02B6/293

CN110764191A	2020-02-07
CN114611443A	2022-06-10
CN113128119A	2021-07-16
CN102183814A	2011-09-14
CN103941345A	2014-07-23
JP2017015789A	2017-01-19

CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)

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