AI Article Synopsis
- The study showcases tunable microring resonators (TMRs) made from light-sensitive polymer coatings on glass optical fibers.
- The TMRs consist of two polydimethylsiloxane layers: one contains an azobenzene dye, while the other features fluorescent powder producing green light when pumped with infrared.
- The resulting visible light induces birefringence changes in the azobenzene layer, leading to a linear shift in resonance peaks by 1.3 nm with varying pump power, with a discussion of photothermal effects in the tuning process.
Article Abstract
We demonstrate tunable microring resonators (TMRs) based on light-activated functional polymer coatings deposited on glass optical fibers. TMRs were fabricated using two layers of polydimethylsiloxane-based compounds: one incorporating an azobenzene dye and one using a fluorescent ytterbium and erbium-doped sodium yttrium fluoride powder. The latter yields a photoluminescent composite producing green up-conversion emission under infrared pumping. This visible emission triggers photoinduced birefringence effects in the azobenzene layer, thereby modifying the spectral features of the TMR devices. The shift in the resonance peaks as a function of pump power is linear, yielding a tuning range of 1.3 nm. Aside from the observed photoinduced effects, we also discuss the photothermal effects involved in the tuning mechanism.
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| http://dx.doi.org/10.1364/OL.399411 | DOI Listing |
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