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Updated: Dec 2, 2025

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Tunable microring resonators using light-activated functional polymer coatings.

Amado M Velázquez-Benítez, Juan Hernández-Cordero

|November 2, 2020

Summary

We developed tunable microring resonators (TMRs) using light-activated polymers on optical fibers. Visible light emission from a fluorescent layer tunes the TMRs, offering a 1.3 nm spectral shift.

Area of Science:

Photonics and optical engineering
Materials science
Polymer chemistry

Background:

Microring resonators (TMRs) are crucial optical devices.
Controlling TMR spectral features is essential for advanced applications.
Light-activated materials offer novel tuning mechanisms.

Purpose of the Study:

To demonstrate tunable microring resonators (TMRs) using light-activated functional polymer coatings.
To investigate the photoinduced effects for spectral tuning.
To explore the potential of polymer-based composites in optical sensing and modulation.

Main Methods:

Fabrication of TMRs on glass optical fibers using two polydimethylsiloxane-based layers.
Incorporation of an azobenzene dye and a fluorescent ytterbium and erbium-doped sodium yttrium fluoride powder.

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Last Updated: Dec 2, 2025

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Utilizing infrared pumping to induce green up-conversion emission and trigger photoinduced birefringence.

Main Results:

Successful demonstration of tunable microring resonators (TMRs).
Achieved a linear shift in resonance peaks with pump power, resulting in a 1.3 nm tuning range.
Observed and discussed both photoinduced and photothermal effects contributing to the tuning mechanism.

Conclusions:

Tunable microring resonators (TMRs) can be effectively fabricated using light-activated polymer coatings.
The interplay of photoluminescence and photoinduced birefringence provides a viable tuning method.
These findings open avenues for novel optical devices with light-controlled spectral properties.