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 Experiment Videos

Variable coupling coefficient nonlinear directional couplers with self-focusing and self-defocusing nonlinearity.

Gang J Liu1, Bin M Liang, Qu Li

  • 1Department of Physics, Shanghai Jiao Tong University, Dongchuan Road 800, Minhang, 200240, Shanghai, China. lgj@sjtu.edu

Applied Optics
|August 19, 2003
PubMed
Summary

Nonlinear directional couplers with variable coupling coefficients exhibit distinct responses in self-focusing versus self-defocusing materials. Coupled-mode theory accurately predicts behavior in self-focusing materials, even at high input powers.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

FOXQ1 activates GLT8D2 to enhance CCL2 N-glycosylation and promote prostate cancer bone metastasis.

Cell death & disease·2026
Same author

Sleep disturbances and risk of Alzheimer's disease: a systematic review and meta-analysis of longitudinal cohort studies.

Alzheimer's research & therapy·2026
Same author

The FOSB-IGFBP5-IGF-1 axis: a novel regulatory pathway that suppresses prostate cancer growth.

Cancer gene therapy·2026
Same author

Global dynamics of blood cadmium in older adults and its association with Alzheimer's disease mortality: A Bayesian hierarchical model-based analysis of 30 countries from 1990 to 2020.

Ecotoxicology and environmental safety·2026
Same author

Channel Modeling for Mobile Molecular Communication With Anomalous Diffusion by Deep Neural Network.

IEEE transactions on nanobioscience·2026
Same author

SDF-1(5-67) neutralizing antibody enhances hippocampal neurogenesis and rescues cognitive deficits in chronic temporal lobe epilepsy.

Scientific reports·2025

Area of Science:

  • Nonlinear optics
  • Waveguide theory
  • Materials science

Background:

  • Nonlinear directional couplers (NLDCs) are crucial components in optical systems.
  • Understanding their behavior in different nonlinear materials is essential for device design.
  • Variable coupling coefficients (VCC) offer tunable control over light propagation.

Purpose of the Study:

  • To investigate the performance of Gaussian type VCC NLDCs.
  • To compare the responses of VCC NLDCs in self-focusing and self-defocusing materials.
  • To assess the applicability of coupled-mode theory for predicting VCC NLDC characteristics.

Main Methods:

  • Theoretical analysis of VCC NLDCs.
  • Numerical simulations for Gaussian type NLDCs.

Related Experiment Videos

  • Comparison of device responses under varying input power levels.

    • Main Results:

    • VCC NLDCs show significantly different responses in self-focusing and self-defocusing materials.
    • These differences become more pronounced at high input power.
    • Coupled-mode theory effectively predicts VCC NLDC behavior in self-focusing media, irrespective of input power.

    Conclusions:

    • The choice of material (self-focusing vs. self-defocusing) critically impacts VCC NLDC performance.
    • High input power highlights the material-dependent characteristics of VCC NLDCs.
    • Coupled-mode theory provides a reliable predictive framework for VCC NLDCs in self-focusing materials.