Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 20, Issue 17-20, Pages 1560-1562Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2008.928843
Keywords
Guided waves; high-index contrast; integrated optic devices; Mach-Zehnder; microring resonators; photonic wire; silicon-on-insulator (SOI) technology; two-ring configuration
Funding
- Singapore Millennium Foundation
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We propose and demonstrate a two-ring coupled Mach-Zehnder interferometer (2RMZI) device that exhibits a sharp resonance with background suppression to give both high finesse and modulation depth. The combination of MZI and the two-ring structure leads to more complete destructive interference that effectively removes the unwanted background envelope effect found in the transmission spectrum of a simple two-ring-two-bus (2R2B) system. The projected finesse enhancement of 2RMZI relative to one-ring coupled MZI and 2R2B is discussed based on best-fit parameter values that match the fabricated devices.
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