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

Self-referenced method for optical path difference calibration in low-coherence interferometry.

M Laubscher1, L Froehly, B Karamata

  • 1Institute of Biomedical Imaging, Optics and Engineering, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland. markus.laubscher@epfl.ch

Optics Letters
|December 24, 2003
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

CT scan-based 3D fracture mapping in civilian gunshot intracapsular fractures of the femur neck.

Injury·2024
Same author

Deep learning-based classification of dermatological lesions given a limited amount of labelled data.

Journal of the European Academy of Dermatology and Venereology : JEADV·2022
Same author

Risks and benefits of dermatological machine learning health care applications-an overview and ethical analysis.

Journal of the European Academy of Dermatology and Venereology : JEADV·2022
Same author

Low 30-day mortality in South African orthopaedic patients undergoing surgery at an academic hospital during the first wave of the COVID-19 pandemic: It was safe to perform orthopaedic procedures at our hospital during the first COVID-19 peak.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2022
Same author

Antibiogram profiles and efficacy of antibiotic regimens of bacterial isolates from chronic osteomyelitis of the appendicular skeleton: A developing-world perspective.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2021
Same author

The gunshot-related injuries in trauma (GRIT) study: A profile of patients affected by gunshot-related orthopaedic injuries across South Africa.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2021
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

A new self-referenced calibration method for low-coherence interferometry uses spectral filtering to correct scan imperfections without a secondary light source. This technique enhances measurement accuracy for applications like optical thickness determination.

Area of Science:

  • Optical Physics
  • Metrology
  • Interferometry

Background:

  • Low-coherence interferometry (LCI) is crucial for precise measurements.
  • Calibration of optical path difference (OPD) modulation is essential for LCI accuracy.
  • Scan imperfections in LCI can degrade measurement quality.

Purpose of the Study:

  • To present a simple, self-referenced method for calibrating OPD modulation in LCI.
  • To enable correction of scan imperfections without external high-coherence sources.
  • To demonstrate the method's utility in precise thickness measurements.

Main Methods:

  • Spectrally filtering a portion of the detected LCI interference signal.
  • Generating a high-coherence signal from the filtered interference data.

Related Experiment Videos

  • Utilizing a spectrometer setup for flexible calibration wavelength and scan range selection.
  • Combining the calibration method with digital spectral shaping.

    • Main Results:

    • The spectrally filtered signal effectively encodes scan imperfections.
    • The method allows for self-referenced correction of these imperfections.
    • Successful measurement of pellicle beam splitter thickness using a white-light source.
    • Demonstrated flexibility in calibration parameters.

    Conclusions:

    • The presented method offers a simple and effective approach to LCI calibration.
    • It eliminates the need for a secondary high-coherence light source.
    • The technique enhances the accuracy and reliability of LCI measurements, particularly for thin film metrology.