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Modeling of Grating Assisted Hybrid Plasmonic Filter and Its On-Chip Gas Sensing Application

  • Mandeep Singh*
  • , Sanjeev Kumar Raghuwanshi
  • , Om Prakash
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A dual-band stop vertical hybrid plasmonic filter based on the silicon nitride fin Bragg grating (FBG) is designed and simulated in the infra-red band. It consists of the two silicon nitride FBGs embedded in the silicon waveguide separated by L SP spacing. Finite element method-based 3D-COMSOL simulation shows two stop band wavelengths at 1.462 and 1.515 μm, respectively. Furthermore, its on-chip methane gas sensing application for coal mines is also investigated. The proposed filter-cum-sensor is the complementary metal-oxide-semiconductor compatible demonstrating 856.50-nm/RIU sensitivity, 120-RIU -1 figure of merit, 6.34 × 10 -2 RIU limit of detection, and 0.52-nm/K temperature sensitivity.

    Original languageEnglish
    Article number8635558
    Pages (from-to)4039-4044
    Number of pages6
    JournalIEEE Sensors Journal
    Volume19
    Issue number11
    DOIs
    Publication statusPublished - 01-06-2019

    All Science Journal Classification (ASJC) codes

    • Instrumentation
    • Electrical and Electronic Engineering

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