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

Optical demultiplexer using a silicon concave diffraction grating.

Y Fujii1, J Minowa

  • 1NTT Yokosuka Electrical Communication Laboratory, 1-2356 Take, Yokosuka-shi, Kanagawa 238-03, Japan.

Applied Optics
|April 1, 1983
PubMed
Summary
This summary is machine-generated.

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

Lifetime Estimation for Hermetically Packaged 10 Gb/sec LiNbO(3) Optical Modulators.

Applied optics·2010
Same author

High-performance lensless in-line filters.

Applied optics·2010
Same author

High-performance and highly stable 0.3-nm-full-width-at-half-maximum interference optical filters.

Applied optics·2010
Same author

Wavelength tunability of electrooptically tuned Fabry-Perot filters.

Applied optics·2010
Same author

Four-channel wavelength multiplexing composed of phase plates and polarizing beam splitters.

Applied optics·2010
Same author

Subnanometer bandwidth interference filter for optical fiber communication systems.

Applied optics·2010
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Researchers developed a novel silicon concave diffraction grating, significantly reducing demultiplexing losses in optical devices. This advancement improves the efficiency of demultiplexers for better signal separation.

Area of Science:

  • Optoelectronics
  • Photonics
  • Materials Science

Background:

  • Demultiplexers utilizing concave diffraction gratings and multimode slab waveguides offer advantages but suffer from high losses.
  • Previous limitations were attributed to the poor diffraction efficiency of conventional concave diffraction gratings.

Purpose of the Study:

  • To develop a high-efficiency silicon concave diffraction grating to overcome the limitations of existing demultiplexer designs.
  • To reduce demultiplexing losses in optical demultiplexers.

Main Methods:

  • A silicon concave diffraction grating was fabricated by cylindrically bending a thin silicon plane diffraction grating.
  • A five-channel demultiplexer was assembled using the novel silicon grating, a multimode slab waveguide, and a fiber array.

Related Experiment Videos

Main Results:

  • The developed silicon concave diffraction grating achieved a high diffraction efficiency of 82% at the blaze wavelength.
  • The assembled five-channel demultiplexer exhibited low branching loss, ranging from 1.4 to 1.8 dB.

Conclusions:

  • The novel silicon concave diffraction grating effectively reduces demultiplexing losses.
  • This technology enhances the performance of optical demultiplexers, making them more practical for various applications.