Polymer optical fiber compound parabolic concentrator tip for enhanced coupling efficiency for fluorescence based glucose sensors

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.

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Polymer Optical Fiber Compound Parabolic Concentrator fiber tip based glucose sensor: in-Vitro Testing

IEEE Sensors Journal ◽

10.1109/jsen.2016.2606580 ◽

2016 ◽

pp. 1-1 ◽

Cited By ~ 10

Author(s):

Hafeez Ul Hassan ◽

Jakob Janting ◽

Soren Aasmul ◽

Ole Bang

Keyword(s):

Optical Fiber ◽

Glucose Sensor ◽

In Vitro Testing ◽

Polymer Optical Fiber ◽

Compound Parabolic Concentrator

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Polymer Optical Fiber Splitter Using Tapered Techniques for Green Technology

10.5772/intechopen.96645 ◽

2021 ◽

Author(s):

Latifah Sarah Supian ◽

Mohd Syuhaimi Ab-Rahman ◽

Norhana Arsad ◽

Hadi Guna ◽

Khadijah Ismail ◽

...

Keyword(s):

Optical Fiber ◽

Evanescent Wave ◽

Coupling Efficiency ◽

Green Technology ◽

Couple Mode ◽

Polymer Optical Fiber ◽

Coupling Region ◽

Communication Devices ◽

User Friendly ◽

Current Device

Polymer Optical Fiber is opted as the most suitable medium for short haul communication system since it has lower cost and low loss for limited distance of transmission compared to glass fiber. This topic aims to show an alternative, green-technology based, economic and user-oriented communication passive device specifically a directional coupler by lapping tapered-fibers technique. This developed device is using designed geometrical blocks with integration of tapering effect, Dc, macro-bending, Rc, force exertion unto the coupling region, Fc, and etching lengths of the cores, Le to gain different splitting ratios, i.e., 50:50 and 90:10 experimentally by using the designed geometrical blocks with varied bending radii that affects the radiation of evanescent wave and to relate the integration of Couple Mode Theory and Hertz’s Law to obtain optimum coupling efficiency. The development may be an option to current device that are less user-friendly and fragile. This device is developed as a green technology-based device as an option for higher speed communication devices since the materials using in the development is safe, harmless, and inexpensive.

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Fabrication Quality Assessment Based on the Coupling of a Dual-Core Microstructured Polymer Optical Fiber

Sensors ◽

10.3390/s21227435 ◽

2021 ◽

Vol 21 (22) ◽

pp. 7435

Author(s):

Amaia Berganza ◽

Eneko Arrospide ◽

Josu Amorebieta ◽

Joseba Zubia ◽

Gaizka Durana

Keyword(s):

Optical Fiber ◽

Coupling Efficiency ◽

Fabrication Process ◽

Polymer Optical Fiber ◽

Theoretical Simulation ◽

Key Factor ◽

Coupling Characteristics ◽

Efficient Power ◽

Dual Core

In this paper we report on the theoretical analysis and fabrication of a dual-core microstructured polymer optical fiber (mPOF) and demonstrate how the coupling characteristics of a dual-core mPOF may be a key factor to assess the quality of the fabrication process. The coupling characteristics of this fiber have been tested and, for comparison purposes, simulations regarding the effects of inaccuracies during the manufacturing process were carried out to evaluate the fabrication quality. Results indicate that theoretical, simulation and experimental data are in good agreement, which highlights the uniformity of the microstructure along the fiber and the quality of its fabrication process. In fact, the manufactured mPOF reached a coupling efficiency up to 95.26%, which makes this mPOF appealing for applications in which highly efficient power couplers are required.

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