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Cascaded Op Amps

Cascaded Op Amps

Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...

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Related Experiment Video

Updated: Apr 18, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Cascaded optical transparency in multimode-cavity optomechanical systems.

Linran Fan¹, King Y Fong¹, Menno Poot¹

¹Department of Electrical Engineering, Yale University, 15 Prospect Street, New Haven, Connecticut 06511, USA.

Nature Communications

|January 15, 2015

Summary

This summary is machine-generated.

We demonstrate a new cascaded optical transparency scheme to achieve ultra-long optical delay in cavity optomechanics. This method overcomes limitations of mechanical dissipation, paving the way for advanced optical storage devices.

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Area of Science:

Quantum optics
Cavity optomechanics
Atomic physics

Background:

Electromagnetically induced transparency (EIT) is crucial in physics, offering significant optical delay.
In cavity optomechanics, optical delay is constrained by mechanical dissipation rates in resolved-sideband modes.

Purpose of the Study:

To demonstrate a cascaded optical transparency scheme for extended optical delay.
To overcome limitations imposed by mechanical dissipation in optomechanical systems.

Main Methods:

Utilized parametric phonon-phonon coupling in a multimode optomechanical system.
Coupled a low-damping mechanical mode (unresolved-sideband regime) to a high-frequency mechanical mode (resolved-sideband regime).

Main Results:

Achieved extended optical delay and higher optical transmission.
Demonstrated optical advancing, a novel capability.
Successfully leveraged cascading transparency for enhanced optomechanical performance.

Conclusions:

The cascaded optical transparency scheme offers a route to ultra-long optical delay.
This work represents a significant advancement towards integrated classical and quantum information storage devices.