Multifunctional tunable band-limited optical Coupled-Ring Reflector (CRR) device using criss-crossing directional coupler

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 der...

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Bibliographic Details
Main Authors: Dingel, Benjamin B., Nacpil, John Christian
Format: Conference Proceeding
Language:English
Subjects:
coupled-ring reflector (CRR)
crisscrossed CRR
Optical coupling
Optical filters
Optical resonators
Optical switches
Resonator filters
Telecommunications
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Summary: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.
ISSN:2642-6102
DOI:10.1109/TENSYMP52854.2021.9550951