Video Experimental Relacionado
Updated: Jan 8, 2026
09:43
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
10.3K
Demostración experimental de multiplexación y demultiplexación por división de modos para ondas acústicas
Zhen-Yu Chen1, Ya-Xi Shen1, Xue-Feng Zhu2
1Department of Physics, Zhejiang Normal University, Jinhua 321004, People's Republic of China.
The Journal of the Acoustical Society of America
|December 19, 2025
Resumen
Este estudio mejora la comunicación submarina multiplexando ondas acústicas en arreglos de guías de onda. Este método aumenta la capacidad de información y permite la transmisión de señales de alta fidelidad en sistemas acústicos complejos.
Área de la Ciencia:
- Acústica
- Tecnología de guías de onda
- Teoría de la información
Sus antecedentes:
- La comunicación submarina es crucial para el desarrollo en alta mar.
- Mejorar la capacidad de información es un enfoque clave de la investigación.
- Las ondas acústicas son vitales para la transmisión de datos submarina.
Objetivo del estudio:
- Investigar la multiplexación y demultiplexación por división de modos de ondas acústicas.
- Mejorar la capacidad de información en sistemas de comunicación submarina.
- Demostrar la transmisión de señales de alta fidelidad utilizando supermodos acústicos.
Principales métodos:
- Se derivó teóricamente la distribución del campo 2D para la propagación de supermodos.
- Se diseñó y validó un arreglo de guías de onda de 3x2 para supermodos acústicos.
- Se utilizó la interferencia multimodo y la manipulación de fase para la multiplexación/demultiplexación.
Principales resultados:
- El número de supermodos acústicos es igual al número de guías de onda.
- La propagación de supermodos muestra estabilidad de banda ancha y multiplexación de frecuencia.
- Se logró la demultiplexación y multiplexación simultánea de supermodos acústicos.
- Se demostró la transmisión de datos de letras inglesas codificadas.
Conclusiones:
- La multiplexación de supermodos acústicos mejora significativamente la capacidad de información de la comunicación.
- El método propuesto permite la transmisión de señales de alta fidelidad en redes acústicas complejas.
- Este enfoque tiene potencial para sistemas avanzados de comunicación submarina.
Videos de Conceptos Relacionados
00:53Sound Waves: Interference
4.5K
Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
4.5K
01:07Interference and Superposition of Waves
6.3K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
6.3K
01:03Modes of Standing Waves - I
3.9K
A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This...
3.9K
01:23Design Example
516
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...
516
01:04Modes of Standing Waves: II
1.6K
The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end....
1.6K
01:07Propagation of Waves
2.8K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.8K