Polymer coating on infrared silver halide fiber for photodarkening protection

Saito, Mitsunori; Nakajima, Kazuhiro; Shishido, M.

doi:10.1109/50.988992

Cited by 9 publications

(4 citation statements)

References 17 publications

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“…26 Therefore, the current examination conducted at temperatures below 60°C proves the usefulness of this measurement method. Typically, when a fiber probe is inserted into a high-temperature environment, cooling air is blown into the probe to protect optical and mechanical elements.…”

Section: Discussionmentioning

confidence: 62%

Development of an all-optical infrared modulator and its application to fiber optic thermometry

Saito

Nishikawa

Shishido

2003

Review of Scientific Instruments

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Articles you may be interested inFiber-optic thermometry using thermal radiation from Tm end doped SiO2 fiber sensor Rev. Sci. Instrum. 85, 044902 (2014); 10.1063/1.4870923 Fiber optic sensors for nuclear power plant applications AIP Conf.A fiber loop mirror temperature sensor demodulation technique using a long-period grating in a photonic crystal fiber and a band-pass filter Rev. Sci. Instrum. 82, 073101 (2011);

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Section: Discussionmentioning

confidence: 62%

Development of an all-optical infrared modulator and its application to fiber optic thermometry

Saito

Nishikawa

Shishido

2003

Review of Scientific Instruments

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“…In our device the magnetic gel is coated using direct coating technique similar to the work done by [36], in which using a dipping technique to coat black paint on the infrared silver halide fiber to protect the fiber from UV and visible light exposure. The dip coating technique has advantages such as simple coating processes, one step deposition of materials on 3-D geometries, and process invariants of temperature and pressure.…”

Section: Magnetic Gelmentioning

confidence: 99%

An optical scanner based on electromagnetically actuated optical fiber

Chiao

2006

Micromachining and Microfabrication Process Technology XI

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To meet the performance requirements for some applications, including small sizes, precise optics, low power consumption and non-electrical control in the devices, an optical fiber scanner using electromagnetic actuation has been developed. This paper acquaints a compact external magnetic field actuated fiber optic scanner, in which the main structure is an optical fiber coated with nickel magnetic gel. The advantages of device architecture are: (1) the scanner dimensions are in the same scales of an optical fiber diameter, (2) optical properties and information are well preserved in the fiber, and (3) the actuation control is external and requires no electrical wiring in scanner design and zero power consumption. In this work, magnetic properties of the nickel based ferromagnetic gel were measured in order to carry out the theoretical calculations of static response and resonant frequencies. With the dynamic waveforms of input and output signals from the position sensing device at both modes of resonant frequencies, we conclude that it is significant to operate at the resonant frequencies so that the scanner requires less power to reach large displacement and the oscillating motion of the scanner is purely sinusoidal. A simple and versatile rotary gel coating technique, static and dynamic performance characterization and potential applications of the fiber scanner will be discussed. Moreover, we will also discuss the practical issues in operation and possible waveform distortion that affects imaging and display quality.

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“…So-called PD had already been reported for other rare earth doped fibers (Pr 3+ [19], Eu 2+ [19], Tm 3+ [20,21], Ce 3+ [22], Tb 3+ [23], Ta 3+ [24]) and was reported in Sm 3+ [25] later. PD is also known to occur in other applications such as non-linear optics [26,27,28], and in other propagative materials like polymer fibers [29]. For Yb, PD was also reported for matrices other than optical glass fiber [30].…”

Section: Introductionmentioning

confidence: 99%

Revisiting literature observations on photodarkening in Yb3+doped fiber considering the possible presence of Tm impurities

Peretti

Gonnet²,

Jurdyc

2012

Journal of Applied Physics

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Ytterbium (Yb) doped fiber lasers are known to be affected by the creation of color centers during lasing (socalled photodarkening (PD)). In a previous work, this defect creation was investigated from a spectroscopic point of view, showing the presence of traces (ppb) of thulium (Tm) in the Yb doped fiber. It was shown that Tm has a strong impact on the defect creation process involved in PD. In this paper, we compare the results from the literature with our Tm hypothesis, without finding any contradiction. Moreover, this hypothesis can be an explanation for the discrepancies in the literature.

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Polymer coating on infrared silver halide fiber for photodarkening protection

Cited by 9 publications

References 17 publications

Development of an all-optical infrared modulator and its application to fiber optic thermometry

Development of an all-optical infrared modulator and its application to fiber optic thermometry

An optical scanner based on electromagnetically actuated optical fiber

Revisiting literature observations on photodarkening in Yb3+doped fiber considering the possible presence of Tm impurities

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