Cross-coupled parallel microring resonators and its comparison to coupled-resonator induced transparency

  • Katsuya Olasiman Akamatsu Department of Physics, Ateneo de Manila University
  • Benjamin Borondia Dingel Ateneo Innovation Center, Ateneo de Manila University and Nasfine Photonics Inc.
  • Aria Buenaventura Department of Physics, Ateneo de Manila University
  • Annelle Raphayette Tiong Chua Department of Physics, Ateneo de Manila University

Abstract

We propose a new coupled waveguide optical resonator (CROW) configuration constructed with cross-coupling structure instead of the typical direct coupling. We also extend the traditional matrix formalism of CROWs to incorporate the new coupling structure. The cross-coupled CROW reveals a novel effect characterized by a main linewidth at normalized frequency φ=0, and two accompanying narrower linewidths, high Q-factor transmitted lines at normalized frequency φ=±π. This effect differs sharply from the coupled-resonator-induced transparency (CRIT) generated with the typical direct coupling-based CROW. We also compare other features of the two CROW types. Lastly, this new effect has application in two-wavelength photonic filtering.

Published
2019-05-11
How to Cite
[1]
K. Akamatsu, B. Dingel, A. Buenaventura, and A. R. Chua. Cross-coupled parallel microring resonators and its comparison to coupled-resonator induced transparency, Proceedings of the Samahang Pisika ng Pilipinas 37, SPP-2019-3B-05 (2019). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2019-3B-05.
Section
Ultrafast Optics, Photonics, and Terahertz Physics