Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
Induced Electric Dipoles01:28

Induced Electric Dipoles

A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Hybrid topological photonic crystals.

Nature communications·2023
Same author

Electromagnetic energy density in hyperbolic metamaterials.

Scientific reports·2022
Same author

Gain-assisted hybrid-superlens hyperlens for nano imaging.

Optics express·2012
Same author

Charged particle motion in a time-dependent flux-driven ring: an exactly solvable model.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Influence of source displacement on the features of subwavelength imaging of a photonic crystal slab.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Imaging off-plane shear waves with a two-dimensional phononic crystal lens.

Journal of physics. Condensed matter : an Institute of Physics journal·2011

Related Experiment Video

Updated: Jun 22, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Periodic dielectric waveguide beam splitter based on co-directional coupling.

Pi-Gang Luan1, Kar-Der Chang

  • 1Wave Engineering Laboratory, Department of Optics and Photonics , National Central University, Chungli 320, Taiwan, ROC. pgluan@dop.ncu.edu.tw

Optics Express
|June 18, 2009
PubMed
Summary

A novel periodic dielectric waveguide beam splitter (PDWBS) offers efficient light splitting with over 95% transmission. This compact device enables broadband operation and minimal bending loss, outperforming traditional photonic crystal waveguides.

More Related Videos

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Related Experiment Videos

Last Updated: Jun 22, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Area of Science:

  • Photonics
  • Waveguide Optics
  • Nanophotonics

Background:

  • Periodic dielectric waveguides (PDW) offer unique light manipulation capabilities.
  • Beam splitters are fundamental components in photonic integrated circuits.
  • Existing photonic crystal waveguides (PCW) face limitations like lattice orientation restrictions.

Purpose of the Study:

  • To design and theoretically analyze a compact three-branch periodic dielectric waveguide beam splitter (PDWBS).
  • To investigate both symmetrical and asymmetrical configurations of the PDWBS.
  • To evaluate the performance of PDWBS in terms of transmission, coupling length, and bending loss.

Main Methods:

  • Finite-difference time-domain (FDTD) method with Bloch-type boundary conditions for band structure calculation.
  • Multiple scattering method for field pattern and transmission calculations.
  • Analysis of co-directional coupling mechanism for efficient light transfer.

Main Results:

  • Achieved efficient light transfer into two output branches via co-directional coupling.
  • Demonstrated short coupling length and broad-band operation.
  • Reported small bending loss, preserving over 95% transmission for bent PDW with bend radius > 5 wavelengths.

Conclusions:

  • The designed PDWBS is a high-efficiency device for power redistribution.
  • PDWBS overcomes the lattice orientation restriction of PCW.
  • The device shows potential for compact and robust integrated photonic applications.