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

Cascaded Op Amps01:16

Cascaded Op Amps

1.3K
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...
1.3K
Gain01:15

Gain

668
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
668
Characteristics of Practical Op Amps01:16

Characteristics of Practical Op Amps

990
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
990
Small-Signal Analysis of BJT Amplifiers01:21

Small-Signal Analysis of BJT Amplifiers

1.9K
Small signal analysis is a fundamental approach used in electronics to understand how a Bipolar Junction Transistor (BJT) amplifier processes signals. In the active region, the BJT is designed for linear amplification. The transistor's behavior under these conditions is governed by its instantaneous base-emitter voltage VBE, a sum of the DC bias VBE, and a small AC signal VBE, resulting in the collector current iC. Here, the collector current has a DC component and an AC component.
1.9K
Small-Signal Analysis of MOSFET Amplifiers01:23

Small-Signal Analysis of MOSFET Amplifiers

1.4K
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
1.4K
Sum and Difference OpAmps01:22

Sum and Difference OpAmps

1.4K
Operational amplifiers (op-amps) are versatile devices that extend beyond amplification. In this context, two specific op-amp configurations are explored: the summing and difference amplifiers.
A summing amplifier, or an adder, utilizes an op-amp to merge multiple input signals into a single output signal. When audio signals are introduced into its input channels, the input resistors initiate currents that traverse feedback resistors, resulting in an output voltage. Applying Kirchhoff's current...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Correction: A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology.

Light, science & applications·2026
Same author

Sputtered AlN Buffer Layer for Low-Loss Crystalline AlN-on-Sapphire Integrated Photonics.

ACS photonics·2026
Same author

Integrated tunable green light source on silicon nitride.

Light, science & applications·2026
Same author

Towards lasing systems for distributed fibre sensing.

Light, science & applications·2026
Same author

Absolute thermometry based on Brillouin scattering in gases.

Light, science & applications·2026
Same author

A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology.

Light, science & applications·2026

Related Experiment Video

Updated: Apr 21, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

13.9K

Power evolution along phase-sensitive parametric amplifiers: an experimental survey.

Fatemeh Alishahi, Armand Vedadi, Mohammad Amin Shoaie

    Optics Letters
    |November 1, 2014
    PubMed
    Summary

    We developed a new method to measure signal power distribution in phase-sensitive fiber-optical parametric amplifiers. Unexpectedly, amplification profiles varied while overall gain remained constant, challenging existing theories near the zero dispersion wavelength.

    More Related Videos

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    9.4K
    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    12.3K

    Related Experiment Videos

    Last Updated: Apr 21, 2026

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
    09:23

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

    Published on: May 30, 2014

    13.9K
    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    9.4K
    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    12.3K

    Area of Science:

    • Optics and Photonics
    • Fiber Optic Amplification

    Background:

    • Phase-sensitive fiber-optical parametric amplifiers (PS-FOPAs) are crucial for optical communications.
    • Understanding signal power distribution is key to optimizing amplifier performance.

    Purpose of the Study:

    • To propose and demonstrate a novel method for measuring longitudinal signal power distribution in PS-FOPAs.
    • To investigate discrepancies between experimental amplification profiles and theoretical predictions.

    Main Methods:

    • Utilized Brillouin optical time-domain analysis (BOTDA) for precise measurement.
    • Experimentally characterized PS-FOPA behavior under varying conditions.

    Main Results:

    • Demonstrated that PS-FOPA amplification can exhibit diverse longitudinal profiles while maintaining consistent overall gain.
    • Observed a divergence from theoretical models concerning gain distribution profiles.
    • Identified the zero dispersion wavelength (ZDW) fluctuation range as critical for this phenomenon.

    Conclusions:

    • Experimental findings challenge established theoretical models of PS-FOPA gain distribution.
    • The observed behavior highlights the importance of considering ZDW fluctuations in PS-FOPA design and analysis.