AI Article Synopsis
- The study presents wavelength-selective reflectors made from silicon microdisk resonators paired with compact Y-branch splitters, utilizing CMOS-photonics technology.
- A high quality factor (Q) of approximately 88,000 was achieved in a larger 2.5-μm-radius device, while a smaller 1.5-μm-radius device provided an ultra-wide free-spectral range (FSR) of over 71 nm but with a reduced Q of about 4000.
- The research explores the coupling between microdisks and waveguides and proposes a multichannel sensing system using multiple microdisk reflectors.
Article Abstract
We demonstrate wavelength-selective reflectors based on silicon microdisk resonators integrated with compact Y-branch splitters, using a CMOS-photonics technology. A high quality factor (Q) of ~ 88,000 was measured in the reflection spectrum for a 2.5-μm-radius device with a small footprint of 6 × 17 μm(2) and a wide free-spectral range (FSR) of over 41 nm. As the radius is reduced to 1.5 μm, corresponding to a device footprint of 4 × 15 μm(2), the spectrum shows an ultra-wide FSR of over 71 nm with the compromise of having a reduced Q of ~ 4000. The coupling between a microdisk and a waveguide is numerically investigated. We further propose a multichannel sensing system using cascaded microdisk reflectors.
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| http://dx.doi.org/10.1364/OE.20.021840 | DOI Listing |
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