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Related Concept Videos

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.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Proposal for electro-optic multiplier based on dual transverse electro-optic Kerr effect.

Changsheng Li1

  • 1School of Instrument Science and Optoelectronic Engineering, Beihang University, Xueyuan Road 37, Haidian District, Beijing 100191, China. c_li_eocm@yahoo.com

Applied Optics
|October 22, 2008
PubMed
Summary

A new electro-optic multiplier utilizes the dual transverse electro-optic Kerr effect for voltage multiplication. This device leverages specific crystal classes and Kerr media, like glass-ceramics, for efficient operation.

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Area of Science:

  • Optoelectronics
  • Materials Science

Background:

  • The electro-optic Kerr effect describes changes in a material's refractive index under an electric field.
  • Dual transverse electro-optic Kerr effect offers unique properties for optical modulation.

Purpose of the Study:

  • To propose a novel electro-optic multiplier design.
  • To explore the application of the dual transverse electro-optic Kerr effect in voltage multiplication.

Main Methods:

  • Utilizing Kerr media with electro-optic phase retardation proportional to the square of the applied electric field.
  • Selecting specific crystal classes (6/mmm, 432, m3m) and isotropic Kerr media (e.g., glass).

Main Results:

  • Demonstrated a functional design for an electro-optic multiplier.
  • Identified glass-ceramic materials with large Kerr constants as suitable for this application.

Conclusions:

  • The proposed electro-optic multiplier design is feasible.
  • Materials with a significant Kerr constant are crucial for effective voltage multiplication devices.