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<p>Using the Green Function method, we present in this paper the optical properties and variable refractive index in symmetric and asymmetric photonic ring. The key characteristics analyzed include reflection rate, quality factor, sensitivity, detection limit, and power separation. The system creates modes that are highly reflection and sensitive to small variations in the refractive index. In the first case, with a symmetric ring, the system achieves a sensitivity of S = 532 nanometers per refractive index unit for wavelengths ranging from λ = 1400 nanometers to λ = 1420 nanometers, with a detection limit (DL) of 0.01 refractive index unit. In the second case, involving an asymmetric ring, the system achieves a sensitivity of S = 249.89 nanometers per refractive index unit for wavelengths ranging from λ = 1450 nanometers to λ = 1490 nanometers, with a detection limit of 0.03 refractive index unit. This paper contributes to the design and application of highly sensitive photonic nanoscale refractive index sensors.</p>

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Optical properties and variable refractive index in symmetric and asymmetric inhomogeneous photonic ring: application for sensing

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • El-Aouni Mimoun,
  • Ben-Ali Youssef,
  • Elamri Fatima Zahra,
  • Essahlaoui Abdelouahed,
  • Bria Driss

摘要

Using the Green Function method, we present in this paper the optical properties and variable refractive index in symmetric and asymmetric photonic ring. The key characteristics analyzed include reflection rate, quality factor, sensitivity, detection limit, and power separation. The system creates modes that are highly reflection and sensitive to small variations in the refractive index. In the first case, with a symmetric ring, the system achieves a sensitivity of S = 532 nanometers per refractive index unit for wavelengths ranging from λ = 1400 nanometers to λ = 1420 nanometers, with a detection limit (DL) of 0.01 refractive index unit. In the second case, involving an asymmetric ring, the system achieves a sensitivity of S = 249.89 nanometers per refractive index unit for wavelengths ranging from λ = 1450 nanometers to λ = 1490 nanometers, with a detection limit of 0.03 refractive index unit. This paper contributes to the design and application of highly sensitive photonic nanoscale refractive index sensors.