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Oscilador de microondas de bajo ruido basado en chip fotónico

Igor Kudelin1,2, William Groman3,4, Qing-Xin Ji5

  • 1National Institute of Standards and Technology, Boulder, CO, USA. igor.kudelin@colorado.edu.

Nature
|March 6, 2024
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio demuestra un nuevo sistema fotónico integrado para generar señales de microondas de bajo ruido. El nuevo enfoque basado en chips ofrece un rendimiento de ruido de fase sin precedentes para sistemas avanzados de navegación y comunicación.

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Área de la Ciencia:

  • La fotónica
  • Ingeniería de microondas
  • Óptica integrada

Sus antecedentes:

  • Las tecnologías modernas requieren ruido de baja fase y señales de microondas estables.
  • Los sistemas fotónicos de microondas actuales usan fibra óptica a granel, lo que limita la miniaturización y la eficiencia energética.

Objetivo del estudio:

  • Desarrollar un sistema fotónico integrado compacto y eficiente para la generación de señales de microondas de bajo ruido.
  • Para superar las limitaciones de la óptica a granel en los sistemas fotónicos de microondas actuales.

Principales métodos:

  • Utilizó una división de frecuencia óptica de dos puntos en un chip.
  • Los láseres de ancho de línea estrecha estabilizados en una cavidad de Fabry-Pérot en miniatura.
  • Empleado un peine solitón de frecuencia oscuro para la división de frecuencia óptica y fotodetectado la salida.

Principales resultados:

  • Generó una señal de microondas de 20 GHz con un ruido de fase de -96 dBc/Hz a un desplazamiento de 100 Hz, disminuyendo a -135 dBc/Hz a un desplazamiento de 10 kHz.
  • Logró un rendimiento de ruido de fase sin precedentes para un sistema fotónico integrado.
  • Integración heterogénea demostrada de todos los componentes fotónicos en un solo chip.

Conclusiones:

  • El sistema fotónico integrado desarrollado ofrece un avance significativo para la navegación de alta precisión, la comunicación y la sincronización.
  • Esta solución a escala de chip allana el camino para la generación de señales de microondas más pequeñas y eficientes.
  • Los resultados ponen de relieve el potencial de la fotónica integrada para revolucionar las aplicaciones de cronometraje de precisión.