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

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
RLC Circuit as a Damped Oscillator01:30

RLC Circuit as a Damped Oscillator

An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...

You might also read

Related Articles

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

Sort by
Same author

Nano-electron volt Fourier-limited transition of a single surface-adsorbed molecule.

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

Transition between cooperative emission regimes in giant perovskite nanocrystals.

Nature materials·2026
Same author

Improving the Stability and Transferability of Effective ADMET Models by Adding Quantum Mechanical Descriptors.

Journal of chemical information and modeling·2026
Same author

Purcell-Enhanced Single-Photon Generation from CsPbBr<sub>3</sub> Quantum Dots in In Situ Selected Laguerre-Gaussian Modes.

ACS nano·2026
Same author

Integrated, ultrafast all-optical polariton transistors with sub-wavelength grating microcavities.

Light, science & applications·2026
Same author

Red blood cell-derived extracellular vesicles as biomaterials: the opportunity of freezing-induced accelerated aging.

Biomaterials science·2025

Related Experiment Video

Updated: Jun 24, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Circular grating resonators as small mode-volume microcavities for switching.

Sophie Schönenberger1, Nikolaj Moll, Thilo Stöferle

  • 1IBM Research GmbH, Zurich Research Laboratory, Säumerstrasse 4, 8803 Rüschlikon, Switzerland. yso@zurich.ibm.com

Optics Express
|April 15, 2009
PubMed
Summary

We show that circular grating resonators (CGRs) function as fast optical switches. These silicon-on-insulator microcavities enable all-optical switching in picoseconds using generated charge carriers.

More Related Videos

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Related Experiment Videos

Last Updated: Jun 24, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

Published on: August 5, 2013

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
12:21

Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators

Published on: April 4, 2016

Area of Science:

  • Photonics
  • Optoelectronics
  • Materials Science

Background:

  • Optical resonators are crucial for photonic devices.
  • High quality factor and small mode volume are desirable for efficient light-matter interaction.
  • Silicon-on-insulator (SOI) technology offers CMOS compatibility for integrated photonics.

Purpose of the Study:

  • To investigate circular grating resonators (CGRs) as fast optical switches.
  • To assess the suitability of CGRs for all-optical switching applications.
  • To characterize the optical properties and performance of waveguide-coupled CGRs.

Main Methods:

  • Fabrication of waveguide-coupled CGRs using silicon-on-insulator technology.
  • Linear optical property characterization via transmission spectroscopy.
  • 3D finite-difference time-domain (FDTD) simulations for resonance identification.
  • Scanning near-field optical microscopy (SNOM) to probe optical modes and losses.

Main Results:

  • Demonstrated suitability of CGRs as fast optical switches.
  • Observed all-optical switching within picoseconds.
  • Characterized high quality factor and small mode volume of CGRs.
  • Identified resonances and parasitic losses using simulations and SNOM.

Conclusions:

  • Circular grating resonators are effective components for fast all-optical switching.
  • SOI-based CGRs are compatible with standard semiconductor manufacturing.
  • The observed switching speed is promising for advanced photonic integrated circuits.