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Related Concept Videos

Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
Switching of BJT01:22

Switching of BJT

Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
Directional Relays01:25

Directional Relays

Directional relays, essential for managing unidirectional fault currents, enhance the safety and efficiency of power systems. On power lines equipped with directional relays, faults downstream (to the right) of the current transformer typically cause the fault current to lag the bus voltage by approximately 90 degrees, known as the forward direction. In contrast, upstream (left-side) faults may result in the fault current leading the bus voltage by nearly 90 degrees, termed the reverse...
Characteristics of OpAmp01:17

Characteristics of OpAmp

The operational amplifier, commonly known as an op-amp, is a specially designed electronic circuit component. Its purpose is to work in conjunction with other circuit elements to execute a defined signal-processing operation. Consider an equivalent circuit model of an op-amp, as depicted in Figure 1; the output section comprises a voltage-controlled source in parallel with the output resistance Ro.
Differential Relays01:20

Differential Relays

Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
Aliasing01:18

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...

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Related Experiment Video

Updated: Jun 9, 2026

Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
10:17

Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging

Published on: June 26, 2017

Acousto-optic comparison switch for optical switching networks with analog addressing techniques.

R B Jenkins, B D Clymer

    Applied Optics
    |August 25, 2010
    PubMed
    Summary

    This study introduces an acousto-optic comparison switch for high-speed sorting networks. It enables efficient optical data transmission using orthogonal polarizations for data and addresses.

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    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

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    Last Updated: Jun 9, 2026

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
    10:17

    Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging

    Published on: June 26, 2017

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    Area of Science:

    • Optoelectronics
    • Parallel processing architectures
    • Optical switching technologies

    Background:

    • Sorting networks are crucial for parallel processing and telecommunications.
    • Existing interconnection techniques like perfect-shuffle and Banyan have limitations.
    • Need for high-bandwidth optical data transmission in these networks.

    Purpose of the Study:

    • To implement an acousto-optic comparison switch for sorting networks.
    • To enable high-bandwidth optical data transmission.
    • To analyze address encoding techniques for optical comparison switches.

    Main Methods:

    • Implementation of an acousto-optic comparison switch.
    • Multiplexing data and address on orthogonal polarizations of light.
    • Encoding addresses using amplitude modulation frequencies or discrete optical power levels.
    • Comparison of addresses using analog techniques.

    Main Results:

    • Demonstrated a functional acousto-optic comparison switch.
    • Achieved high-bandwidth optical data transmission.
    • Provided analysis of address encoding techniques regarding speed and noise.

    Conclusions:

    • The acousto-optic comparison switch is a viable component for advanced sorting networks.
    • Orthogonal polarization multiplexing offers an effective method for high-bandwidth optical data transmission.
    • Further analysis of speed and noise is critical for optimizing switch performance.