Impact of ZIF-8 coatings on cross coupled double ring resonator (CC-SDR) performance: A study on optical loss reduction, resonance extinction ratio and mode confinement

Authors

Amante Joshua Dumalus Jr. ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Benjamin B. Dingel ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University and Nasfine Photonics Inc.
John Emmanuel Santos ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Tim Jeff M. Rodriguez ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Ramon Benedict Lapiña ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Jezlor Villarde ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Wayne Jasper Sy ⋅ PH Ateneo de Manila University, Ateneo Research Institute of Science and Engineering, Philippines
Kent Emmanuel Soria ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Kryss Urbano ⋅ PH Department of Physics and Ateneo Research Institute of Science and Engineering, Ateneo de Manila University
Marienette M. Vega ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman

Abstract

Optical microring resonators (MRRs) are used in optical sensing and signal processing, but their performance is often hindered by optical losses due to waveguide surface roughness, scattering, and poor waveguide mode confinement. In this study, we experimentally demonstrate the role of zeolitic imidazolate framework-8 (ZIF-8), a metal-organic framework, as a functional coating to improve the performance of cross-coupled standard double ring resonator (CC-SDR) circuit. The coated CC-SDR exhibited (i) lower overall optical losses by 2 to 3 dB, (ii) increased average resonance extinction ratio (ER) of 6.84 dB, (iii) wavelength resonance shift of 0.4 nm, and (iv) broader linewidth (FWHM) by 0.1 nm compared with uncoated devices excluding exceptions.

Downloads

Published

2025-06-17

Issue

2025: Proceedings of the 43rd Samahang Pisika ng Pilipinas Physics Conference

Section

Optics and Photonics

License

How to Cite

[1]

“Impact of ZIF-8 coatings on cross coupled double ring resonator (CC-SDR) performance: A study on optical loss reduction, resonance extinction ratio and mode confinement”, Proc. SPP, vol. 43, no. 1, pp. SPP–2025, Jun. 2025, Accessed: Apr. 20, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2025-3D-06