Lumerical-Based SiN Half-Band FIR Maximally Flat-Top Optical Filter with Low Insertion Loss and High Extinction Ratio at 193 THz

Md Sanowar Hossain; G. K. M. Hasanuzzaman; Md Tanvir Mahtab Tulon; Md. Rakibul Islam

Lumerical-Based SiN Half-Band FIR Maximally Flat-Top Optical Filter with Low Insertion Loss and High Extinction Ratio at 193 THz

Optics 2026-07-10 v1

Authors: Md Sanowar Hossain , G. K. M. Hasanuzzaman , Md Tanvir Mahtab Tulon , Md. Rakibul Islam

Abstract

This paper presents a maximally flat-top half-band FIR optical filter on a silicon nitride (SiN) platform at 193 THz. Using a cascaded Mach-Zehnder Interferometer (MZI) topology simulated in Lumerical INTERCONNECT, MODE, and FDTD, the filter achieves insertion losses of 0.1349 dB and 0.1761 dB with extinction ratios of 18.317 dB and 23.002 dB for Channel-A and Channel-B, respectively, under realistic S-parameter conditions.

Keywords

silicon nitride optical filter half-band FIR Mach-Zehnder interferometer maximally flat-top low insertion loss high extinction ratio

Cite

@article{arxiv.2607.10031,
  title  = {Lumerical-Based SiN Half-Band FIR Maximally Flat-Top Optical Filter with Low Insertion Loss and High Extinction Ratio at 193 THz},
  author = {Md Sanowar Hossain and G. K. M. Hasanuzzaman and Md Tanvir Mahtab Tulon and Md. Rakibul Islam},
  journal= {arXiv preprint arXiv:2607.10031},
  year   = {2026}
}

Comments

5 pages, 8 figures