Journal ArticleDOI
Novel fiber coupler tapering process using a microheater
Y. Takeuchi,J. Noda +1 more
TLDR
In this article, a novel fiber tapering process using a microheater is proposed and fiber couplers have been fabricated by means of this method, which is excellent for producing a 12.4mm-wide, stable heat region controlled by applied current.Abstract:
A novel fiber tapering process using a microheater is proposed and fiber couplers have been fabricated by means of this method. This heater is excellent for producing a 12.4-mm-wide, stable heat region controlled by applied current. Wavelength-flattened couplers with very low losses are fabricated. Taper slope angles are far more gradual than that obtained by stationary burner flames, and the length of the fiber region deformed by tapering is 11.8 mm. The average excess loss at 1.31 and 1.55 mu m is 0.13 dB with a maximum value of 0.3 dB. >read more
Citations
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Journal ArticleDOI
Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors
TL;DR: This review summarizes principles and current stage of development of fiber-optic chemical sensors (FOCS) and biosensors (FOBS) and analytical results reached with fiber- Optic chemical and biological sensors.
Journal ArticleDOI
Ultralow loss single-mode silica tapers manufactured by a microheater
TL;DR: In this paper, the authors used a ceramic thermoelectric heater to fabricate single-mode subwavelength silica tapers with an ultralow loss level, achieving an average taper transmission of 94%.
Journal ArticleDOI
Light-propagation characteristics in thermally diffused expanded core fibers
TL;DR: In this paper, a simplified model for understanding the mechanism of light propagation in TEC fibers is presented, and the results are compared with those obtained by a simple theory and an exact theory.
Journal ArticleDOI
A generalized heat-brush approach for precise control of the waist profile in fiber tapers
Chams Baker,Martin Rochette +1 more
TL;DR: In this article, a generalized heat-brush tapering approach is presented, in which the ratio of the feed and draw velocities changes within each tapering sweep, allowing for controlled and precise shaping of tapers with an arbitrary waist profile and dissimilar transition regions.
Journal ArticleDOI
Spectral characteristics of tapered LPG device as a sensing element for refractive index and temperature
Thomas D.P. Allsop,F. Floreani,Kazimierz Jędrzejewski,Paulo Marques,Rosa Romero,David J. Webb,Ian Bennion +6 more
TL;DR: In this paper, the fabrication and characterization of long-period gratings (LPGs) in fiber tapers is presented alongside supporting theory, and they possess a high sensitivity to the index of aqueous solutions due to an observed spectral bifurcation effect, yielding a limiting index resolution of /spl plusmn/8.5/spl times/10/sup -5/ for solutions with an index in the range 1.330-1.335.
References
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Journal ArticleDOI
Control of optical fibre taper shape
TL;DR: In this article, two fiber tapering systems are tested for correspondence with the results of a simple predictive model for taper shape, and a travelling gas burner system is found to imitate the model and should reproducibly realise any shape of taper, given an appropriate recipe from the model.
Journal ArticleDOI
Fiber-coupler fabrication with automatic fusion-elongation processes for low excess loss and high coupling-ratio accuracy
TL;DR: In this paper, a novel fibercoupler fabrication system which automatically processes fusion and elongation is presented, and the fabrication yield and reliability of the present system have been much higher than those of the conventional method and the processing time for fabrication could also be reduced.
Journal ArticleDOI
Single-mode fused biconical couplers for wavelength division multiplexing with channel spacing between 100 nd 300 nm
M. Eisenmann,E. Weidel +1 more
TL;DR: In this article, a single-mode fused biconical coupler tailored to the requirements of wavelength-division-multiplexing systems is presented, with an accuracy of + or 5 nm at the two operating wavelengths.
Journal ArticleDOI
Theoretical investigation of light coupling phenomena in wavelength-flattened couplers
TL;DR: In this paper, a study of light coupling phenomena in wavelength-flattened couplers by normal mode analysis is discussed and the effective index method and step approximation of the taper are used to analyze the mode coupling in the fused-taper region.
Journal ArticleDOI
Coupler type multi/demultiplexer composed of different parameter fibres
Y. Takeuchi,J. Noda +1 more
TL;DR: In this paper, a new type of coupler, a 1.31/1.55 μm wavelength multi/demultiplexer composed of different parameter fibres, has been fabricated.
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