Abstract

Phosphorescent oxides and fluorescent dyes were used together to create a fiber-type illuminator that glows in the dark without the need for electric power. Dye-doped polymer fibers, which were bundled at one end, were linearly arrayed in a polysiloxane resin that contained phosphorescent oxide particles. The phosphorescent resin continued to glow for a long time even after the excitation light was removed. Organic dyes in a polymer fiber were excited by the phosphorescence and emitted fluorescence toward the fiber end. Fluorescence from a number of dyes was combined in the long fiber, and, consequently a bright light beam emerged from the fiber end. Useful performance, i.e., high power density, narrow beam divergence, and long afterglow, is demonstrated by the prototype fiber illuminator.

© 2000 Optical Society of America

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References

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  1. E. J. Fenyves, ed., Scintillating Fiber Technology and Applications, Proc. SPIE2007, (1993).
  2. A. Tanaka, Y. Kojima, “Characterization of radiosensitivity of a plastic fiber scintillator,” Polymer J. 25, 407–410 (1993).
    [CrossRef]
  3. S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).
  4. A. Tagaya, Y. Koike, E. Nihei, S. Teramoto, K. Fujii, T. Yamamoto, K. Sasaki, “Basic performance of an organic dye-doped polymer optical fiber amplifier,” Appl. Opt. 34, 988–992 (1995).
    [CrossRef] [PubMed]
  5. M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
    [CrossRef]
  6. A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
    [CrossRef]
  7. T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
    [CrossRef]
  8. Chemitech Picarico (Chemitech Co., Tokyo, Japan, 1998).

1998 (1)

M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
[CrossRef]

1996 (1)

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

1995 (1)

1993 (1)

A. Tanaka, Y. Kojima, “Characterization of radiosensitivity of a plastic fiber scintillator,” Polymer J. 25, 407–410 (1993).
[CrossRef]

1992 (1)

A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
[CrossRef]

1987 (1)

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Ando, A.

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Aoki, Y.

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

Fenyves, E. J.

E. J. Fenyves, ed., Scintillating Fiber Technology and Applications, Proc. SPIE2007, (1993).

Fujii, K.

Ichikawa, A.

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Inaba, H.

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Ito, H.

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Kitagawa, K.

M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
[CrossRef]

Koike, Y.

Kojima, Y.

A. Tanaka, Y. Kojima, “Characterization of radiosensitivity of a plastic fiber scintillator,” Polymer J. 25, 407–410 (1993).
[CrossRef]

A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
[CrossRef]

Matsuzawa, T.

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

Murayama, Y.

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

Muto, S.

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Nihei, E.

Ogawa, Y.

M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
[CrossRef]

Saito, M.

M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
[CrossRef]

Sasaki, K.

Sawada, H.

A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
[CrossRef]

Tagaya, A.

Takeuchi, N.

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

Tanaka, A.

A. Tanaka, Y. Kojima, “Characterization of radiosensitivity of a plastic fiber scintillator,” Polymer J. 25, 407–410 (1993).
[CrossRef]

A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
[CrossRef]

Teramoto, S.

Yamamoto, T.

Appl. Opt. (1)

Electron. Lett. (1)

M. Saito, Y. Ogawa, K. Kitagawa, “One-way transmission optical fibre made of dye-doped polymers,” Electron. Lett. 34, 1873–1874 (1998).
[CrossRef]

J. Electrochem. Soc. (1)

T. Matsuzawa, Y. Aoki, N. Takeuchi, Y. Murayama, “A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+,” J. Electrochem. Soc. 143, 2670–2673 (1996).
[CrossRef]

Oyo Butsuri (1)

S. Muto, A. Ando, A. Ichikawa, H. Ito, H. Inaba, “Characteristics of plastic fiber dye laser,” Oyo Butsuri 56, 114–119 (1987), in Japanese. (A monthly publication of the Japan Society of Applied Physics).

Polymer J. (2)

A. Tanaka, Y. Kojima, H. Sawada, “Response time of plastic optical fiber doped with organic fluorescent material,” Polymer J. 24, 291–296 (1992).
[CrossRef]

A. Tanaka, Y. Kojima, “Characterization of radiosensitivity of a plastic fiber scintillator,” Polymer J. 25, 407–410 (1993).
[CrossRef]

Other (2)

E. J. Fenyves, ed., Scintillating Fiber Technology and Applications, Proc. SPIE2007, (1993).

Chemitech Picarico (Chemitech Co., Tokyo, Japan, 1998).

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Figures (10)

Fig. 1
Fig. 1

Phosphorescence spectra of phosphorescent materials CP-20, CP-10, and CP-05 that were dispersed in polysiloxane resins (∼3 vol. %). The vertical axis is normalized by the peak value of each spectrum.

Fig. 2
Fig. 2

Transmission losses or absorption coefficients of the green, yellow, and red fluorescent fibers.

Fig. 3
Fig. 3

Configuration of the sample prepared for the illumination experiment.

Fig. 4
Fig. 4

Optical setup for the characterization of fiber illuminators.

Fig. 5
Fig. 5

Emission spectrum of the fluorescent lamp that was used for excitation of the phosphorescent polymer. The vertical axis is normalized by the peak value.

Fig. 6
Fig. 6

Fluorescence spectra of the green or yellow dye-doped fibers that were excited by phosphorescent materials CP-10 or CP-05, respectively (samples 1 and 2). The vertical axis is normalized by the peak value of each spectrum.

Fig. 7
Fig. 7

Photographs of the output ends of the samples. Bright output light is observed at the ends of the green (sample 1) or yellow (sample 2) fluorescent fiber bundles with a phosphor-doped polymer coating. No output light is observed for the undoped fiber bundle (sample 3) although it is coated with a phosphor-doped polymer. Faint output light is observed at the ends of the columnar polymers that contain phosphorescent particles CP-10 (sample 4) or CP-05 (sample 5). The samples were irradiated from the side surface, and the photographs were taken 10 s after the irradiating lamp was turned off.

Fig. 8
Fig. 8

Angular distributions of the output light beams that were measured for (a) samples 1 (○) and 4 (●), and (b) samples 2 (○) and 5 (●). The vertical axis is normalized by the peak value of sample 1 or 2.

Fig. 9
Fig. 9

Decay of the fluorescence or phosphorescence light intensities that were measured for (a) samples 1 (○) and 4 (●), and (b) samples 2 (○) and 5 (●).

Fig. 10
Fig. 10

Model of the fluorescent fiber for theoretical consideration.

Equations (3)

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dIdl=P exp-αl.
Il=P/α1-exp-αl.
L=2.3/α.

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