Label-Free Biosensing Characteristics of Micro/Nano-Fiber Coupler

Hai, 汪海 Wang; Wenchao, 周文超 Zhou; Kaiwei, 李凯伟 Li; Peng, 郝鹏 Hao; Mingbo, 迟明波 Chi; Yi-hui, 吴一辉 Wu

doi:10.3788/aos201737.0306005

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“…Fiber coupler is a new type of optical passive device used for the proportional distribution and synthesis of optical power based on micro-nano fiber [1][2][3] . With the rapid development of optical fiber communication, and fiber network, the fiber coupler studied by domestic and foreign scholars gradually deepened, thereby making fiber coupler in many high-tech fields more and more widely used [4][5][6] . Fiber coupler based on its simple operation, stability and reliability, long life, easy maintenance, and other advantages, as well as the fiber as its components and its own corrosion resistance and high-temperature resistance and other characteristics are efficiently applied to precision devices fiber end butt, all-optical switch, optical signal coupling, branch, and distribution.…”

Section: Introductionmentioning

confidence: 99%

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Refractive index sensing of melting tapered fiber coupler based on dual-port input

Wang

Jiang

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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A refractive index sensor based on dual-port input of melting tapered fiber coupler is proposed in this paper. By combining theory and experiment, the influence of the coupling degree of the tapered region on the output mode field and output power of the fiber coupler is studied by finite element method. Two single-mode fibers are connected to custom-made couplers with different spectral ratios, and then the fibers are wounded and melted so that the fiber core is refined, closed and tapered. The mode fieldsof the two fibers are coupled and affect each other to realize the fiber transmission of different powers. By using the taper region structure for refractive index detection, the refractive index range of 1.335to 1.399, the sensor sensitivity of 131.29pm / RIU, and the linear fitting degree of 95.98% were obtained. The structure of the sensor is simple, and the input power can be controlled according to the demand. The production cost is low and has a good application prospect and development value.

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Section: Introductionmentioning

confidence: 99%

“…The coupler was first used for refractive index detection, and the refractive index sensitivity was obtained 1402nm / RIU , which verified the feasibility of the biosensor. The detection limit of sheep immunoglobulin (IgG) antigen was obtained 2pg / mL [4] . D.J.…”

Section: Introductionmentioning

confidence: 99%

Refractive index sensing of melting tapered fiber coupler based on dual-port input

Wang

Jiang

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

View full text Add to dashboard Cite

show abstract

Label-Free Biosensing Characteristics of Micro/Nano-Fiber Coupler

Cited by 1 publication

References 0 publications

Refractive index sensing of melting tapered fiber coupler based on dual-port input

Refractive index sensing of melting tapered fiber coupler based on dual-port input

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