Polymer Optical Fiber Tip Mass Production Etch Mechanism to Achieve CPC Shape for Improved Biosensor Performance

Hafeez Ul Hassan, Ole Bang, Jakob Janting*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We report on a simple chemical etching method that enables nonlinear tapering of Polymer Optical Fiber (POF) tips to manufacture Compound Parabolic Concentrator (CPC) fiber tips. We show that, counter-intuitively, nonlinear tapering can be achieved by first etching the core and not the cladding. The etching mechanism is modelled and etched tips are characterized both geometrically and optically in a fluorescence glucose sensor chemistry. A Zemax model of the CPC tipped sensor
predicts an optimal improvement in light capturing efficiency of a factor of 3.96 compared to the conventional sensor with a plane-cut fiber tip. A batch of eight CPC fiber tips has been manufactured by the chemical etching method. The batch average showed an increase of a factor of 3.16, which is only 20% less than the predicted value. The method is reproducible and can be up-scaled for mass production.
Original languageEnglish
Article number285
JournalSensors
Volume19
Issue number2
Number of pages12
ISSN1424-8220
DOIs
Publication statusPublished - 2019

Keywords

  • Fiber optic sensors
  • Polymers
  • Blood or tissue constituent monitoring
  • Etching
  • Nonimaging optics

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  • Bachelor project

    Jakob Janting (Main supervisor), Rune Inglev (Supervisor), Ole Bang (Supervisor) & Emil Møller (Supervisor)

    4 Mar 20194 Aug 2019

    Activity: Examinations and supervisionSupervisor activities

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