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Polyethersulfone optical fibers with thermally induced microbubbles for custom side-scattering profiles
Optics Express
|March 17, 2019
Summary
Researchers developed polyethersulfone (PES) optical fibers with tunable light scattering. These fibers, featuring microbubble-induced scattering, enable controlled light delivery for applications like phototherapy.
Area of Science:
- Materials Science
- Optics
- Biomedical Engineering
Background:
- Optical fibers are crucial for light delivery in various applications.
- Controlling light scattering within optical fibers is challenging but important for precise illumination.
- Polyethersulfone (PES) is a versatile polymer with potential for optical applications.
Purpose of the Study:
- To develop and characterize polyethersulfone (PES) optical fibers with controllable side-illumination profiles.
- To investigate the formation and effect of microbubbles on light scattering in PES fibers.
- To demonstrate the potential of these custom-designed fibers for spatially tuned light delivery.
Main Methods:
- Drawing and thermal processing of polyethersulfone (PES) to create optical fibers.
- Controlled formation of microbubbles within the fiber's outer layer via thermal treatment.
- Characterization of light scattering properties (amplitudes from 0.25-2.5 cm⁻¹) and illumination profiles (uniform, spot-based).
Main Results:
- Successfully fabricated mechanically flexible PES optical fibers with tunable light scattering.
- Demonstrated the ability to create various side-illumination profiles, including uniform and localized spots.
- Showcased microbubble-induced scattering for efficient side-coupling of ambient light.
Conclusions:
- Thermally processed PES optical fibers offer a novel method for generating custom side-illumination profiles.
- Microbubble formation provides a controllable mechanism for light scattering in optical fibers.
- These fibers hold promise for applications requiring spatially tuned light delivery, such as phototherapy.
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