Related Experiment Video
Updated: Feb 20, 2026
08:48
Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
8.7K
Highly birefringent V-groove liquid core fiber
Optics Express
|October 19, 2017
Summary
Researchers developed efficient light guidance in a liquid core using an open V-groove. This novel method enables polarimetric liquid sensing with demonstrated single-mode guidance and birefringence.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- Efficient light guidance is crucial for optical sensing applications.
- Liquid-core waveguides offer unique properties but face challenges in stability and integration.
- V-groove structures provide a potential platform for novel waveguide designs.
Purpose of the Study:
- To demonstrate efficient light guidance along a liquid core within an open V-groove structure.
- To analyze the guiding properties, including single-mode guidance and modal birefringence.
- To validate the potential for polarimetric liquid sensing using this configuration.
Main Methods:
- Utilized the finite element method to analyze guiding properties.
- Experimentally fabricated a silica V-groove fiber with a 40° opening angle.
- Spliced the V-groove fiber to standard single-mode fibers.
- Filled the V-groove with a liquid core (refractive index 1.455) up to 47cm.
Main Results:
- Achieved efficient light guidance along the liquid core.
- Confirmed single-mode guidance conditions theoretically and experimentally.
- Measured modal birefringence consistent with theoretical predictions.
- Demonstrated a functional liquid-core waveguide suitable for sensing.
Conclusions:
- The open V-groove design enables efficient light guidance in a liquid core.
- The demonstrated single-mode guidance and birefringence are suitable for polarimetric sensing.
- This technology holds promise for developing advanced liquid-based optical sensors.
Related Concept Videos
01:22Fiber Reinforced Concrete
437
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
437
01:05Total Internal Reflection Fluorescence Microscopy
13.5K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
13.5K
01:16Confocal Fluorescence Microscopy
21.3K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
21.3K
01:21IR Absorption Frequency: Hybridization
1.4K
Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
1.4K
01:04IR Absorption Frequency: Delocalization
1.4K
Electron delocalization refers to the distribution of electrons across multiple atoms within a molecule rather than being confined to a single atom or bond. This phenomenon is common in systems with conjugated bonds—structures where alternating single and double bonds allow π-electrons to move freely across the network. The movement of electrons stabilizes the molecule and can affect various chemical properties, including vibrational frequencies observed in IR spectroscopy.
In IR...
In IR...
1.4K
01:26Phase Contrast and Differential Interference Contrast Microscopy
14.6K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
14.6K