Demonstration of an Integrated Terahertz Band-Stop Filter Using an Apodized Bragg Grating

2023/08/16 by Ali Dehghanian, Walid Gomaa, Dehghanian, Ali +7 · 1 citation
Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Photonic Crystals and Applications #Photonic and Optical Devices #Terahertz technology and applications

paper · pdf · doi:10.48550/arxiv.2308.08677

openalex publication_date 2023/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This paper presents the demonstration of an on-chip integrated Terahertz (THz) Apodized Bragg grating (TABG) which functions as band-stop filter with a center frequency of 0.8 THz and a bandwidth of 200 GHz. For experimentation, we integrate the TABG into our THz System-on-Chip to enable wideband (DC - 1.5 THz) device characterization. Using this methodology, we measure the signal transmission through the TABG and find the experimental results align with simulation and theory provides a rejection of approximately 20 dB across the stop-band.

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