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 circulator for an in-line-type compact lidar.

Tatsuo Shiina1, Eiji Minami, Masafumi Ito

  • 1Faculty of Systems Engineering, Wakayama University, Japan. shiina@sys.wakayama-u.ac.jp

Applied Optics
|July 9, 2002
PubMed
Summary

An optical circulator enables in-line lidar systems to separate laser beams and echo signals on a single axis. This technology allows for precise measurement of cloud phase polarization ratios using lidar.

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

Influence of Mold Design and Molding Conditions on the Optical Properties of Contact Lenses.

Sensors (Basel, Switzerland)·2026
Same author

Pyrolysis-assisted catalytic conversion of wood in hot-compressed water for the production of aromatic monomers and syngas without external hydrogen addition.

RSC advances·2026
Same author

Inhalation of hydrogen gas reduces exacerbations of acute aortic dissection in mice.

Life sciences·2026
Same author

Non-invasive assessment of bamboo leaf optical properties and microstructural changes under light stress using time-domain OCT.

Scientific reports·2026
Same author

Optical characterization analysis of surface modified-plastics (SMP) induced by atmospheric cold plasma system.

Scientific reports·2026
Same author

Pyrolysis-assisted catalytic hydrogenolysis of lignin in Japanese cedar: Roles of polysaccharides and cell wall structure.

Bioresource technology·2025

Area of Science:

  • Optics and Photonics
  • Atmospheric Science
  • Remote Sensing

Background:

  • Lidar (light detection and ranging) systems are crucial for atmospheric research.
  • In-line lidar configurations require efficient separation of transmitted and received optical signals.
  • Measuring cloud properties, such as phase, necessitates advanced optical components.

Purpose of the Study:

  • To demonstrate the application of an optical circulator in an in-line lidar system.
  • To enable simultaneous separation of transmitted laser beams and received echo signals.
  • To facilitate the measurement of polarization ratios related to cloud phases.

Main Methods:

  • Integration of an optical circulator within a telescope for an in-line lidar.
  • Utilizing the optical circulator to manage the optical axis for both transmission and reception.

Related Experiment Videos

  • Employing the circulator's capability to divide echo signals into orthogonally polarized components.

    • Main Results:

    • The developed optical circulator achieved an insertion loss of 2.2 dB.
    • Isolation greater than 60 dB was obtained in a laser-transmitting scenario.
    • The circulator successfully separated transmitted laser beams and echo lights on the same optical axis.

    Conclusions:

    • The optical circulator is a viable component for in-line lidar systems.
    • This technology allows for simultaneous signal separation and polarization analysis.
    • It enables narrow field-of-view measurements of cloud phase polarization ratios with in-line lidar.