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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Coupled-resonator-induced-transparency concept for wavelength routing applications
M Mancinelli1, R Guider, P Bettotti
1Nanoscience Laboratory, Department of Physics, University of Trento, Povo 38100, Trento, Italy. mancinelli@science.unitn.it
Optics Express
|July 1, 2011
Summary
Coupled Resonator Induced Transparency (CRIT) in SCISSOR structures enables transmission channels in stop-bands. This research proposes CRIT-based add/drop filters and routers for ultra-dense wavelength division multiplexing.
Area of Science:
- Photonics and Optical Engineering
- Integrated Optics
- Nanophotonics
Background:
- Coupled Resonator Induced Transparency (CRIT) is a phenomenon enabling narrow transmission bands within stop-bands.
- Side-Coupled Integrated Spaced Sequence of Resonators (SCISSOR) structures offer a platform for manipulating light propagation.
- Controlling resonator radii and spacing is crucial for tailoring optical properties.
Purpose of the Study:
- To investigate the CRIT effect in SCISSOR structures with varying resonator radii.
- To propose and analyze CRIT-based add/drop filters and optical routers.
- To assess the performance and robustness of these devices against structural variations.
Main Methods:
- Theoretical analysis of CRIT effects in SCISSOR configurations.
- Numerical simulations to model light propagation and device performance.
- Design and evaluation of add/drop filters and 2x2 routers utilizing CRIT-SCISSOR.
Main Results:
- Demonstrated formation of transmission channels within SCISSOR stop-bands by controlling resonator radii and spacing.
- Proposed two distinct methods for CRIT-based add/drop filters with analyzed performance metrics (linewidth, crosstalk, losses).
- Presented high-performance multiplexer/demultiplexer (mux/demux) and 2x2 router designs based on modified SCISSOR structures.
Conclusions:
- CRIT-based SCISSOR devices offer a promising avenue for ultra-dense wavelength division multiplexing (UD-WDM) applications.
- The proposed designs exhibit favorable performance characteristics, even with random structural parameter variations.
- This work advances the development of compact and efficient integrated optical components for WDM systems.
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