Nanophotonics Technology Center, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
Opt Lett. 2011 Jul 15;36(14):2707-9. doi: 10.1364/OL.36.002707.
A technique for the development of low-cost and high-sensitivity photonic biosensing devices is proposed and experimentally demonstrated. In this technique, a photonic bandgap structure is used as transducer, but its readout is performed by simply using a broadband source, an optical filter, and a power meter, without the need of obtaining the transmission spectrum of the structure; thus, a really low-cost system and real-time results are achieved. Experimental results show that it is possible to detect very low refractive index variations, achieving a detection limit below 2×10(-6) refractive index units using this low-cost measuring technique.
提出并实验演示了一种低成本、高灵敏度的光子生物传感器件的开发技术。在该技术中，使用光子带隙结构作为换能器，但无需获取结构的传输光谱，而仅使用宽带光源、光学滤波器和功率计即可进行其读出；因此，实现了真正的低成本系统和实时结果。实验结果表明，使用这种低成本测量技术可以检测到非常低的折射率变化，检测极限低于 2×10(-6)折射率单位。
