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

Brillouin-based fiber-optic distributed temperature sensor with optical preamplification.

K De Souza, T P Newson

    Optics Letters
    |December 11, 2007
    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

    Compact optical microfiber phase modulator.

    Optics letters·2012
    Same author

    A 5 cm spatial resolution temperature compensated distributed strain sensor evaluated using a temperature controlled strain rig.

    Optics letters·2011
    Same author

    Theoretical and experimental demonstrations of a microfiber-based flexural disc accelerometer.

    Optics letters·2011
    Same author

    Optical fiber microwire current sensor.

    Optics letters·2010
    Same author

    Coherence tuned fiber optic sensing system, with self-initialization, based on a multimode laser diode.

    Applied optics·2010
    Same author

    Reduction of semiconductor laser diode phase and amplitude noise in interferometric fiber optic sensors.

    Applied optics·2010
    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

    This study enhances fiber-optic distributed temperature sensing using optical preamplification. The system significantly improves the signal-to-noise ratio for Brillouin scattering measurements in long-range sensors.

    Area of Science:

    • Optoelectronics
    • Fiber optic sensing
    • Photonics

    Background:

    • Fiber-optic distributed temperature sensing (DTS) commonly uses spontaneous Brillouin scattering.
    • Direct detection methods in DTS can suffer from low signal-to-noise ratios (SNR), limiting sensing range and accuracy.
    • Optical amplifiers are crucial for boosting weak optical signals in fiber optic systems.

    Purpose of the Study:

    • To investigate the effectiveness of optical preamplification in improving the SNR of a fiber-optic distributed temperature sensor.
    • To analyze the performance of a specific fiber-based optical preamplifier design for Brillouin scattering-based DTS.
    • To identify the limiting factors affecting the SNR in the preamplified system.

    Main Methods:

    • Implementation of a fiber-based optical preamplifier comprising a circulator, an erbium-doped fiber amplifier (EDFA), and a fiber Bragg grating (FBG).

    Related Experiment Videos

  • Integration of the preamplifier into a distributed temperature sensor system utilizing spontaneous Brillouin scattering and direct detection.
  • Characterization of the preamplifier's gain (27 dB) and bandwidth (47 GHz) and evaluation of its impact on the Brillouin signal's SNR over a 23-km fiber sensor.

    • Main Results:

    • Demonstrated a significant improvement of 17 dB in the optical signal-to-noise ratio (SNR) for the Brillouin signal.
    • Successfully implemented an optical preamplifier in a 23-km fiber-optic distributed temperature sensor.
    • Identified amplified spontaneous emission (ASE) and subsequent spontaneous-spontaneous beat noise as the primary SNR limitation at the photodetector.

    Conclusions:

    • Optical preamplification is a viable technique for enhancing the performance of fiber-optic distributed temperature sensors.
    • The developed preamplifier system effectively boosts the Brillouin signal, enabling better SNR over extended fiber lengths.
    • Further research is needed to mitigate the impact of amplified spontaneous emission noise for even higher SNR performance.