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finite-difference time-domain optical simulations  (ANSYS inc)

 
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    ANSYS inc finite-difference time-domain optical simulations
    Finite Difference Time Domain Optical Simulations, supplied by ANSYS inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/finite-difference+time-domain+optical+simulations/pmc11952718-51-7-12?v=ANSYS+inc
    Average 90 stars, based on 1 article reviews
    finite-difference time-domain optical simulations - by Bioz Stars, 2026-07
    90/100 stars

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    (a) Conceptual diagram of bi-layer grating coupler emitters. The design features a fully-etched grating coupler in SiN2, followed by a corrugated grating in SiN1. The 473 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.47 µ m) with width apodization from 0.254 µ m to 2.038 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.47 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 1.431 µ m to 1.5 µ m. The 638 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.63 µ m) with width apodization from 0.493 µ m to 1.381 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.63 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 0.627 µ m to 1.26 µ m. (b) Simulated far field projection of the 473 nm grating coupler emitter in water (refractive index, n = 1.3361). (c) Simulated far field projection of the 638 nm grating coupler emitter in water (refractive index, n = 1.3315). Simulations in (b,c) used <t>Lumerical</t> 3D <t>FDTD</t> with combined TE-and TM-polarized input light (modeling depolarized input light).
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    (a) Conceptual diagram of bi-layer grating coupler emitters. The design features a fully-etched grating coupler in SiN2, followed by a corrugated grating in SiN1. The 473 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.47 µ m) with width apodization from 0.254 µ m to 2.038 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.47 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 1.431 µ m to 1.5 µ m. The 638 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.63 µ m) with width apodization from 0.493 µ m to 1.381 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.63 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 0.627 µ m to 1.26 µ m. (b) Simulated far field projection of the 473 nm grating coupler emitter in water (refractive index, n = 1.3361). (c) Simulated far field projection of the 638 nm grating coupler emitter in water (refractive index, n = 1.3315). Simulations in (b,c) used Lumerical 3D FDTD with combined TE-and TM-polarized input light (modeling depolarized input light).

    Journal: bioRxiv

    Article Title: Foundry-fabricated dual-color nanophotonic neural probes for photostimulation and electrophysiological recording

    doi: 10.1101/2024.09.25.614961

    Figure Lengend Snippet: (a) Conceptual diagram of bi-layer grating coupler emitters. The design features a fully-etched grating coupler in SiN2, followed by a corrugated grating in SiN1. The 473 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.47 µ m) with width apodization from 0.254 µ m to 2.038 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.47 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 1.431 µ m to 1.5 µ m. The 638 nm emitter (length: 101 µ m) consists of a SiN2 grating (fill factor: 50%, period: 0.63 µ m) with width apodization from 0.493 µ m to 1.381 µ m, followed by a SiN1 corrugated grating (fill factor: 50%, period: 0.63 µ m) with central waveguide width of 0.22 µ m and grating width apodization from 0.627 µ m to 1.26 µ m. (b) Simulated far field projection of the 473 nm grating coupler emitter in water (refractive index, n = 1.3361). (c) Simulated far field projection of the 638 nm grating coupler emitter in water (refractive index, n = 1.3315). Simulations in (b,c) used Lumerical 3D FDTD with combined TE-and TM-polarized input light (modeling depolarized input light).

    Article Snippet: Neural probes were designed and simulated using Lumerical finite-difference time-domain (FDTD) optical simulations (Ansys, Inc., Canonsburg, PA, USA).

    Techniques: Refractive Index