Design and characterization of a plastic optical fiber active coupler

Zubía, Joseba; Irusta, Unai; Arrué, J.; Aguirre, A.

doi:10.1109/68.726755

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…An equal power splitting ratio can be obtained, for instance, with a null separation between the fiber axes and a coupling length of 35 mm [25]. Active couplers and switches were achieved by placing a liquid crystal (LC) between the two fibers [26,27]. The LC chosen had parallel and perpendicular refractive indices of 1.5342 and 1.4717 respectively, and excess losses were about 3 dB.…”

Section: Active and Passive Optical Devices For Pofmentioning

confidence: 99%

Geometric Optics Analysis of Multi-Step Index Optical Fibers

Zubía

Aldabaldetreku

Durana

et al. 2004

Fiber and Integrated Optics

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Section: Active and Passive Optical Devices For Pofmentioning

confidence: 99%

Geometric Optics Analysis of Multi-Step Index Optical Fibers

Zubía

Aldabaldetreku

Durana

et al. 2004

Fiber and Integrated Optics

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“…The 1arge core size and high numerical aperture of the POF facilitates optical beam launching into the fiber from an external source as well as the connection between plastic fibers. POF couplers have been developed based on the side-polishing method [1,2], the fusion and pulling method [3], and the fiber mixing method [4]. However, these couplers are not suitable for separating the sensor signal from the optical source.…”

Section: Introductionmentioning

confidence: 99%

Side-Coupled Asymmetric Plastic Optical Fiber Coupler for Optical Sensor Systems

Kim¹,

Kim²,

Hyun³

et al. 2008

Journal of the Optical Society of Korea

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This paper reports a side-coupled asymmetric 1×2 plastic optical fiber coupler for an optical sensor system. The dependence of the optical power coupling ratio on the coupling angle and refractive index of the adhesion layer in both the forward and backward directions was examined based on the geometrical optics. It was confirmed experimentally that the coupling ratios can be optimized by controlling the coupling angle and refractive index of the adhesion layer. A maximum forward coupling efficiency > 93% was achieved.

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“…In harsh (conductive or explosive) environment, safety considerations limit the applications of traditional sensors based on mechanical or electrical techniques. Considering these restrictions, optical fiber sensing has gained a lot of attention due to its strong immunity to electromagnetic interference, remote sensing, and low cost [1,2]. Nowadays, optical fiber liquid level sensors in the reported literature are usually categorized into wavelengthmodulated measurement and intensity-modulated measurement.…”

Section: Introductionmentioning

confidence: 99%

An Optical Fiber Liquid Level Sensor Based on Side Coupling Induction Technology

Zhang

Hou

et al. 2018

Journal of Sensors

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An optical fiber liquid level sensor based on two twisted polymer optical fibers twining around a racetrack column is demonstrated in this study. The side-coupling power of the passive fiber is modulated by the refractive index (RI) of the environment medium and decreases while the liquid level increases. The variation patterns of the side-coupling power in the bent section and the straight section form a step attenuation, which can improve the measurement range with a superior sensitivity and distinguish liquids with different RIs. Furthermore, the cost-effective sensor also shows good reversibility and low temperature-dependent properties.

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Design and characterization of a plastic optical fiber active coupler

Cited by 7 publications

References 7 publications

Geometric Optics Analysis of Multi-Step Index Optical Fibers

Geometric Optics Analysis of Multi-Step Index Optical Fibers

Side-Coupled Asymmetric Plastic Optical Fiber Coupler for Optical Sensor Systems

An Optical Fiber Liquid Level Sensor Based on Side Coupling Induction Technology

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