Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Imaging Biological Samples with Optical Microscopy

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

Upsampling

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...

Aliasing

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...

Reconstruction of Signal using Interpolation

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...

You might also read

Related Articles

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

Sort by

Same author

Impact of Dedicated Care Coordination on Access to Multidimensional Support Services in Young-Onset Colorectal Cancer: A Pragmatic Trial.

JCO oncology practice·2026

Same author

Hemocyte-secreted papilin bearing mucin-type <i>O</i>-glycans regulates peripodial stalk formation via epidermal JAK/STAT signaling in <i>Drosophila</i>.

iScience·2026

Same author

Comparison of surgical outcomes of robotic complete mesocolic excision for right-sided colon cancer in obese versus non-obese patients.

Surgical endoscopy·2026

Same author

Colorectal-vaginal fistula after rectal cancer resection: international comparative cohort study of characteristics and treatment.

The British journal of surgery·2025

Same author

Neuromuscular Defects in a <i>Drosophila</i> Model of the Congenital Disorder of Glycosylation SLC35A2-CDG.

Biomolecules·2025

Same author

ASO Author Reflections: Risk Factors for and the Oncologic Impact of Anastomotic Leakage in Mid-Low Rectal Cancer: A Long-Term Debate.

Annals of surgical oncology·2025

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Optical coding scheme using optical interconnection for high sampling rate and high resolution photonic

Takashi Nishitani, Tsuyoshi Konishi, Kazuyoshi Itoh

|June 25, 2009

Summary

We developed an optical coding scheme for photonic analog-to-digital conversion. This method transforms multi-level analog signals into parallel binary codes for faster detection using photodiode arrays.

More Related Videos

Video-rate Scanning Confocal Microscopy and Microendoscopy

Video-rate Scanning Confocal Microscopy and Microendoscopy

Published on: October 20, 2011

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

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

Published on: January 7, 2019

Related Experiment Videos

Last Updated: Jun 22, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Video-rate Scanning Confocal Microscopy and Microendoscopy

Video-rate Scanning Confocal Microscopy and Microendoscopy

Published on: October 20, 2011

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

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

Published on: January 7, 2019

Area of Science:

Photonics
Optical Engineering
Signal Processing

Background:

Photonic analog-to-digital conversion (P-ADC) is crucial for high-speed signal processing.
Existing P-ADC methods face challenges in efficient multi-level signal encoding and parallel detection.

Purpose of the Study:

To propose and demonstrate a novel optical coding scheme for P-ADC.
To enable conversion of multi-power level analog signals into multi-bit binary codes for parallel detection.

Main Methods:

An optical coding scheme utilizing optical interconnection was developed.
Optical quantization using self-frequency shift was employed.
A binary conversion table based on optical interconnection generated the multi-bit binary code.

Main Results:

The proposed scheme successfully converted 8-level analog pulses into 3-bit parallel binary codes.
Demonstrated bit-parallel detection using a binary photodiode array.

Conclusions:

The developed optical coding scheme effectively achieves photonic analog-to-digital conversion.
This method offers a viable approach for high-speed, parallel processing of analog signals.