Multifunctional Tunable Band-Limited Optical Coupled-Ring Reflector (CRR) Device Using Criss-Crossing Directional Coupler

• Main Authors: Dingel, Benjamin, Nacpil, John Christian
• Format: text
• Published: Archīum Ateneo 2020
• Subjects: optical filters; optical switches; resonator filters; optical resonators; tools; optical coupling; telecommunications; coupled-ring reflector (CRR); crisscrossed CRR; Optics; Physics
• Online Access: https://archium.ateneo.edu/physics-faculty-pubs/71; https://ieeexplore.ieee.org/document/9550951
• Institution: Ateneo De Manila University

We present a new; multifunctional; tunable coupled-ring reflector (CRR) device where the two cascaded microring resonator-based All-Pass Filters (APFs) are now interconnected using a “crisscrossed port connection arrangement and then directly coupled” by a third directional coupler. We derive analytically and investigate numerically its intensity response. We show that it has many unique features such as: (i) asymmetric stopband/passband property; (ii) tunable dual-narrowband passband filter; and (iii) a unique quasi-interleaver characterized by dual-narrowband passband filter interleaved with broadband stopband filter. We also establish the critical parameter relationships that describe these rich responses and compare them to the typical CRR.