Theoretical, Numerical, and Experimental Analysis of Optical Fiber Tapering

Xue, Shicheng; Eijkelenborg, Martijn A. van; Barton, G.W.; Hambley, P.

doi:10.1109/jlt.2007.893028

Cited by 51 publications

(34 citation statements)

References 11 publications

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“…The furnace was made of an U-shaped aluminum block fixed over an hot plate. This setup, showed in Fig.1, permits a simple insertion and extraction of fiber into the furnace and ensures a controlled extension of the fiber, allowing the prediction of the taper length and the waist dimension [20,22].…”

Section: Taper Fabricationmentioning

confidence: 99%

“…In Fig.3 the measured taper ratio R versus the total elongation ΔL is reported. The taper ratio R is predicted to vary with the elongation according to an exponential law [20,22]:…”

Section: Taper Fabricationmentioning

confidence: 99%

“…However, whereas the fabrication of fiber tapers in silica glass is a well-established process both for sensing and communications applications, only few examples of plastic optical fiber (POF) tapers have been reported using chemical etching [19] or heat-and pull technique [20] and always on PMMA fiber.…”

Section: Introductionmentioning

confidence: 99%

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Polymer optical fiber tapers for biosensing applications

Gravina¹,

Bernini²

2009

Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX

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We report the fabrication and the characterization of perfluorinated cladded multimode polymer optical fibers tapers. The fibers employed was a graded-index polymer optical fibers with core and cladding diameters of 62.5/90 and 120/160 and very low refractive index (nCore = 1.356, nCladding = 1.342). The tapers were fabricated using the heat-and-pull technique. This approach permits a good prediction of the taper shape and waist dimension. Despite to the fact that taper core is not in direct contact with the external medium, these fiber tapers can be used for sensing applications. In fact, some of the guided modes are no more confined in the core region but can still be guided by the fiber in the cladding region. Therefore, there is an evanescent wave in the external medium, related to bound and tunneling rays that can pass the taper region in the cladding. In particular, the very low refractive indexes of the core-cladding perfluorinated polymers permit a strong enhancement of the power fraction in the evanescent wave in aqueous environments (n=1.33). We carried out experiments evanescent wave spectroscopy by immerging the tapered fiber water containing a dissolved organic blue dye (Methylene blue) for a concentration range 5e-8-1e-5 M.

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Section: Taper Fabricationmentioning

confidence: 99%

“…In Fig.3 the measured taper ratio R versus the total elongation ΔL is reported. The taper ratio R is predicted to vary with the elongation according to an exponential law [20,22]:…”

Section: Taper Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Polymer optical fiber tapers for biosensing applications

Gravina¹,

Bernini²

2009

Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications IX

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show abstract

“…Many researchers have studied the tapering shape curve function for the optical fiber taper. [6][7][8] For example, they used exponential, Gaussian, parabolic, and polynomial functions to simulate taper shape curve. But their analysis was aimed only to the small-size conventional optical fiber taper, and it was difficult to calculate the shape curve function for the SSC optical taper accurately.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a shape curve function for a special solid coupled optical taper

Chen

Guo

et al. 2010

Opt. Eng

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For a special solid coupled optical taper, a differential equation of its shape curve is deduced using the curvature-shape matching relationship, and the closed-form solution of the equation can be acquired by its concrete initial curvature and shape boundary condition. Since the physical formation process in different tapering conditions can be described conveniently by the solution, the variation relationships among the taper length, shape factor, large-end radius, small-end radius, and shape function are analyzed. The results show that the theoretical simulation is basically in accordance with the experimental data and the errors are also given. Thus, given the shape factor parameters of the special solid coupled optical taper, the solution can be properly used to predict the taper shape curve for any taper length, large-end radius, and small-end radius.

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“…Especially, the emergence angle is quite important for estimating the transmission loss of SSC optical taper. Some researchers have studied the transmission properties in different optical fiber tapers [2][3][4][5] . N. Healy et al [6] investigated the tapering of silicon optical fibers by using a fusion splicer and the optical loss was measured.…”

mentioning

confidence: 99%

Theoretic research on emergence angle of specialty solid coupled optical taper

Chen

Guo

et al. 2011

Optoelectron. Lett.

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The emergence angle of specialty solid coupled (SSC) optical taper is numerically studied by using ray-tracing method, which depends on the shape curve function. The relationships between the taper length, shape factor, large-end and smallend radii and the emergence angle are analyzed, respectively. The results show that the variation of small-end radius has great influence on the range of emergence angle for SSC optical taper. Therefore, given the shape curve function of the SSC optical taper, the emergence angle can be used for analyzing the transmission loss of SSC optical taper.

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Theoretical, Numerical, and Experimental Analysis of Optical Fiber Tapering

Cited by 51 publications

References 11 publications

Polymer optical fiber tapers for biosensing applications

Polymer optical fiber tapers for biosensing applications

Investigation of a shape curve function for a special solid coupled optical taper

Theoretic research on emergence angle of specialty solid coupled optical taper

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