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.

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Issue

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

Entangled!
25-28 June 2025, National Institute of Physics, University of the Philippines Diliman

Please visit the SPP2025 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2025-3D-06

Section

Optics and Photonics

Published

2025-06-17

How to Cite

[1]

AJ Dumalus, BB Dingel, JE Santos, TJM Rodriguez, RB Lapiña, J Villarde, WJ Sy, KE Soria, K Urbano, and MM Vega, 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, Proceedings of the Samahang Pisika ng Pilipinas 43, SPP-2025-3D-06 (2025). URL: https://proceedings.spp-online.org/article/view/SPP-2025-3D-06.