相关实验视频

Updated: Jun 18, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

9.9K

形成联合星座的光学调制方案基于一对平底三角形体

Jianxin Ren, Bo Liu, Mengjie Wu

    Optics letters
    |August 2, 2024
    PubMed
    概括

    使用共同底部三角形体的新联合星座塑造方案改善了信号传输. 这种三维调制增强了星座的优点和接收器灵敏度,特别是当与概率造型相结合时.

    更多相关视频

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator08:39

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

    Published on: January 28, 2019

    9.8K
    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry12:14

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

    Published on: August 12, 2013

    21.7K

    相关概念视频

    Rotation of Asymmetric Top01:11

    Rotation of Asymmetric Top

    By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
    The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
    879
    Unsymmetric Bending - Angle of Neutral Axis01:15

    Unsymmetric Bending - Angle of Neutral Axis

    Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
    When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
    292
    Spherical Coordinates01:23

    Spherical Coordinates

    Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
    10.0K
    Curvilinear Motion: Rectangular Components01:23

    Curvilinear Motion: Rectangular Components

    Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
    As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
    440
    Design Example: Traverse Angle Computations01:25

    Design Example: Traverse Angle Computations

    Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
    74
    Deformation in a Circular Shaft01:10

    Deformation in a Circular Shaft

    One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
    275