Cascaded ring resonator and Mach-Zehnder interferometer with a Sagnac loop for Vernier-effect refractive index sensing

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• 作者：Benedetto Troia ; ^{benedetto.troia@poliba.it}Author Vitae ; Francesco De LeonardisAuthor Vitae ; Vittorio M.N. PassaroAuthor Vitae
• 关键词：Optical sensor ; Silicon photonics ; Refractive index sensing ; Vernier effect
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：240
• 期：Complete
• 页码：76-89
• 全文大小：4047 K
• 卷排序：240

文摘

A new silicon photonic integrated sensor based on the Vernier effect is proposed. Double performance can be achieved compared to state-of-the-art Vernier sensors. Half the operating bandwidth of state-of-the-art Vernier sensors can be employed. A rigorous and detailed modelling of the new Vernier devices is presented. <30000 ppm of NH3 in water and less than 5000 ppm of CO2 in air can be detected.