相关实验视频

Updated: Jun 18, 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

14.5K

基于在O + E频段运行的线性腔双通道结构的木合纤维放大器

Lihong Wang, Tigang Ning, Li Pei

    Optics express
    |June 11, 2024
    PubMed
    概括

    这项研究引入了一种新型的线性腔双通结构,用于胺合纤维放大器 (BDFAs). 这种设计增强了O和E频段的超宽带放大,为光纤通信提供了更好的性能和稳定性.

    更多相关视频

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier10:17

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

    Published on: July 12, 2017

    11.5K
    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy08:48

    Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

    Published on: November 22, 2019

    7.5K

    相关概念视频

    Energy Stored In A Coaxial Cable01:31

    Energy Stored In A Coaxial Cable

    A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
    In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
    Cascaded Op Amps01:16

    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...
    MOSFET Amplifiers01:17

    MOSFET Amplifiers

    The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
    Small-Signal Analysis of MOSFET Amplifiers01:23

    Small-Signal Analysis of MOSFET Amplifiers

    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...
    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.
    Biasing of FET01:22

    Biasing of FET

    Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
    In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...