The Fabrication and Study on Fiber-Optic Biosensor Using Heating-Pulling Method

• Main Authors: Po-YingLee, 李柏穎
• Other Authors: Tzow-Yow Tsai
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/fkyhh4

碩士 === 國立成功大學 === 微電子工程研究所 === 102 === Using fiber sensor has the advantages of compact、high environmental resistance and high signal-to-noise ratio. The optical fiber with tapered region was well fabricated by pulling and heating it. The incident light would leak out from the fiber so that we could use it to excite the analytes outside the fiber. By utilizing this feature, optical-sensing mechanism like fluorescence sensing or SERS signal detection could be achieved. Unlike many studies, the fiber sensing system we built has the advantages of simpler structure and lower cost without using filters and optoelectronics. In this thesis, we demonstrated the experimental configuration and showed how much the leaking power was. Moreover, we confirmed the feasibility of the tapered fiber is available to excite the analytes and receive the signals. And we successfully received the R6G dye fluorescence. The last part of this thesis is the SERS signal excitation, the SERS signal is not observed might cause by low power density of the excitation light and the distance between particles is not close enough.