Microgap Multicavity Fabry-Pérot Biosensor

• Published in: Journal of lightwave technology 2007-07, Vol.25 (7), p.1797-1804
• Main Authors: Yan Zhang, Xiaopei Chen, Yongxin Wang, Cooper, K.L., Anbo Wang
• Format: Article
• Language: English
• Subjects: Applied sciences; Biological and medical sciences; Biosensors; Biotechnology; Circuit properties; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fabry-Perot; Fabry-Pérot interferometers; Flexibility; Fundamental and applied biological sciences. Psychology; Information, signal and communications theory; Integrated optics. Optical fibers and wave guides; Methods. Procedures. Technologies; multicavity sensor; Multiplexing; Optical and optoelectronic circuits; Optical fiber sensors; Optical fibers; Optical films; Optical interferometry; Optical sensors; Optoelectronic devices; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Sensor fusion; Sensor phenomena and characterization; Signal and communications theory; Splicing; Telecommunications and information theory; temperature compensation; Temperature dependence; Temperature sensors; Thin films; Various methods and equipments
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2007.899169

This paper presents a microgap multicavity Fabry-Perot interferometric sensor fabricated by wet etching and fusion splicing of single-mode optical fibers. The temperature dependence of the optical thickness measurement of self-assembled thin films can be compensated by extracting the temperature information from the multiplexed temperature sensor. Experimental results demonstrate that thin-film characteristics under temperature variations can be examined accurately. The high-temperature sensitivity of the temperature sensor also enables biosensing under temperature variations. This greatly improves the flexibility in sample handling and provides the opportunity to investigate temperature effects in biological applications.