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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:
Sound Waves: Resonance01:14

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Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
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:

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

Coupled-resonator-induced reflection in photonic-crystal waveguide structures.

Sergei F Mingaleev1, Andrey E Miroshnichenko, Yuri S Kivshar

  • 1VPI Development Center, Belarus High Technologies Park, Minsk, Belarus.

Optics Express
|July 24, 2008
PubMed
Summary

Researchers discovered coupled-resonator-induced reflection (CRIR), a new optical effect with a tunable high-quality reflection line. This phenomenon, arising from Fano-Feshbach resonances, differs from coupled-resonator-induced transparency (CRIT).

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Area of Science:

  • Photonics
  • Quantum Optics
  • Optical Engineering

Background:

  • Coupled-resonator optical waveguides are key components in integrated photonics.
  • Coupled-resonator-induced transparency (CRIT) has been explored for all-optical switching and slow light.
  • Understanding light-matter interactions in coupled systems is crucial for advanced optical devices.

Purpose of the Study:

  • To investigate resonant light transmission in a coupled-resonator optical waveguide system.
  • To reveal and characterize a novel optical effect: coupled-resonator-induced reflection (CRIR).
  • To explore the potential applications of CRIR in optical switching and slow-light propagation.

Main Methods:

  • Theoretical study of light transmission in a coupled-resonator optical waveguide with two side cavities.
  • Analysis of Fano-Feshbach resonances in systems with multiple resonances.
  • Numerical simulations to characterize the CRIR effect and its tunability.

Main Results:

  • Discovery of coupled-resonator-induced reflection (CRIR), distinct from CRIT.
  • CRIR exhibits a high and easily tunable quality factor for the reflection line.
  • Both CRIR and CRIT originate from Fano-Feshbach resonances in multi-resonance systems.

Conclusions:

  • CRIR offers a new mechanism for controlling light propagation.
  • The tunable high-Q reflection line of CRIR has potential applications in all-optical switching.
  • CRIR can be utilized for precise control of slow-light propagation.