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

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Pilot and Numeric Relaying01:21

Pilot and Numeric Relaying

Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
Parallel Resonance01:23

Parallel Resonance

The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
Maximum Power Transfer01:16

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
Power Factor Correction01:20

Power Factor Correction

The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass filters, manage...

You might also read

Related Articles

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

Sort by
Same author

Optical metasurfaces for general vision processing on the edge.

Nature·2026
Same author

Simplified layered MLSE for PAM4 short-reach optical interconnects.

Optics express·2026
Same author

An all-optical signal processor enabling terabit-per-second real-time equalization.

Science (New York, N.Y.)·2026
Same author

Photonic Mixture-of-Experts for scalable multi-task on-chip optical neural networks.

Nature communications·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

Semantic Communication Based on Slot Attention for MIMO Transmission in 6G Smart Factories.

Sensors (Basel, Switzerland)·2026
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

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
Same journal

Compact low-loss 8 × 8 silica optical switch based on large fan-in/fan-out couplers.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: Jun 17, 2026

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
12:56

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

Published on: October 17, 2010

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

Chen Ding, Yutian Liu, Qiarong Xiao

    Optics Letters
    |June 15, 2026
    PubMed
    Summary
    This summary is machine-generated.

    We developed a digital signal processing framework for passive optical networks using Non-Orthogonal Multiple Access (NOMA) and Digital Subcarrier Multiplexing (DSCM). This enhances carrier-phase recovery and signal quality, improving data transmission reliability.

    More Related Videos

    Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans
    08:25

    Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans

    Published on: May 19, 2016

    Related Experiment Videos

    Last Updated: Jun 17, 2026

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
    12:56

    Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)

    Published on: October 17, 2010

    Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans
    08:25

    Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans

    Published on: May 19, 2016

    Area of Science:

    • Optical Communications
    • Digital Signal Processing

    Background:

    • Non-orthogonal multiple access (NOMA) combined with digital subcarrier multiplexing (DSCM) offers dense and flexible coherent passive optical networks (PONs).
    • NOMA signal superposition introduces biases in pilot-aided carrier-phase recovery (CPR), and bandwidth limitations affect edge subcarriers.

    Purpose of the Study:

    • To propose a unified digital signal processing (DSP) framework to address NOMA-induced phase bias and transceiver limitations in coherent PONs.
    • To improve the robustness and performance of carrier-phase recovery and signal detection in NOMA-DSCM systems.

    Main Methods:

    • A unified DSP framework incorporating dual-pilot CPR with pair-wise maximum-ratio combining (MRC) across adjacent subcarrier pairs.
    • Inserting pilots into both NOMA signals to create a composite pilot reference, suppressing interference-induced phase bias.
    • Utilizing a reliability estimate for weighting subcarrier branches in MRC to achieve diversity gain.

    Main Results:

    • The dual-pilot CPR demonstrated more robust phase recovery compared to conventional methods under NOMA interference.
    • The proposed framework achieved up to 2.29 dB Signal-to-Interference-plus-Noise Ratio (SINR) gain at low optical power.
    • Average Bit Error Rate (BER) was reduced by 75.89% for ONU 1 and 30.33% for ONU 2.

    Conclusions:

    • The proposed unified DSP framework effectively mitigates NOMA-induced phase bias and transceiver penalties in coherent PONs.
    • Dual-pilot CPR and MRC significantly enhance phase recovery robustness and overall system performance.
    • The framework offers substantial SINR gain and BER reduction, enabling more reliable data transmission in high-density optical networks.