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 Concept Videos

Active Filters01:25

Active Filters

1.4K
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
1.4K
Passive Filters01:27

Passive Filters

1.2K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.2K
IR Spectrometers01:25

IR Spectrometers

3.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
3.1K

You might also read

Related Articles

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

Sort by
Same author

VSIG3 preserves mitochondrial homeostasis and restrains CD4⁺ T-Cell infiltration in myocardial ischemia-reperfusion injury through regulation of mitochondrial-derived vesicles.

Journal of nanobiotechnology·2026
Same author

Interference fading suppression in Φ-OTDR using space-time-frequency joint processing.

Optics express·2026
Same author

Type 1 diabetic ketoacidosis characterized by vomiting and Hamman's syndrome: case report and literature review.

Postgraduate medicine·2026
Same author

Time-frequency synchronization for distributed phase coherent network based on optically carried satellite navigation signals.

Optics express·2026
Same author

Physics-informed neural Volterra compensation enabling over 2600× efficiency improvement in 12,057-km ultra-long-haul coherent transmission.

Communications engineering·2026
Same author

Synergistic antenna-modulator integration for a monolithic photonic RF receiver.

Nature communications·2026

Related Experiment Video

Updated: May 7, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
08:21

Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Published on: May 11, 2014

10.8K

All-fiber optical filter with an ultranarrow and rectangular spectral response.

Xihua Zou, Ming Li, Wei Pan

    Optics Letters
    |October 10, 2013
    PubMed
    Summary

    Researchers developed an ultranarrow, rectangular all-fiber optical filter using fiber Bragg gratings. This novel filter achieves the narrowest bandpass response reported, enabling high-resolution optical signal processing.

    More Related Videos

    Writing Bragg Gratings in Multicore Fibers
    08:48

    Writing Bragg Gratings in Multicore Fibers

    Published on: April 20, 2016

    8.2K
    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    6.5K

    Related Experiment Videos

    Last Updated: May 7, 2026

    Wideband Optical Detector of Ultrasound for Medical Imaging Applications
    08:21

    Wideband Optical Detector of Ultrasound for Medical Imaging Applications

    Published on: May 11, 2014

    10.8K
    Writing Bragg Gratings in Multicore Fibers
    08:48

    Writing Bragg Gratings in Multicore Fibers

    Published on: April 20, 2016

    8.2K
    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    6.5K

    Area of Science:

    • Photonics and Optical Engineering
    • Materials Science

    Background:

    • High-resolution optical and electrical signal processing demands filters with ultranarrow and rectangular spectral responses.
    • Existing all-fiber filters often struggle to achieve the desired spectral purity and narrow bandwidth.

    Purpose of the Study:

    • To design and fabricate an all-fiber optical filter with an ultranarrow and rectangular spectral response.
    • To demonstrate a novel fiber Bragg grating (FBG) based filter capable of achieving unprecedented spectral characteristics.

    Main Methods:

    • Design and fabrication of an all-fiber optical filter utilizing a fiber Bragg grating with a significant number of phase shifts.
    • Experimental characterization of the filter's spectral response using optical spectrum analysis.

    Main Results:

    • The fabricated filter exhibited an ultranarrow 3 dB bandwidth of 650 MHz.
    • A rectangular shape factor of 0.513 at 25 dB bandwidth was achieved, indicating a highly rectangular spectral response.
    • This represents the narrowest rectangular bandpass response reported for an all-fiber filter to date.

    Conclusions:

    • The developed all-fiber optical filter successfully achieved an ultranarrow and highly rectangular spectral response.
    • The filter leverages the advantages of all-fiber implementation, offering a promising solution for advanced optical signal processing applications.