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Gain efficiency of PbF2/InF3-based praseodymium-doped fluoride optical fibres for 1.3 µm optical fibre amplifiers

Gain efficiency of PbF2/InF3-based praseodymium-doped fluoride optical fibres for 1.3 µm optical fibre amplifiers

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The authors have developed praseodymium (Pr3+)-doped PbF2/InF3-based fluoride optical fibres (PDFs) with relative refracfive index differences (Δn) of 2.5, 3.7 and 4.6% for use as high efficiency optical fibre amplifiers. The small signal gain coefficients of the above fibres were 0.18, 0.26 and 0.30 dB/mW. These values are higher than those of ZrF4-based PDFs.

Inspec keywords: fluoride glasses; indium compounds; refractive index; fibre lasers; praseodymium; optical fibre losses; lead compounds; optical fibre fabrication

Other keywords: gain efficiency; relative refractive index differences; PbF2-InF3-GaF3-ZnF2-LaF3-YF3:Pr; fluoride optical fibres; PIGZYL; 1.3 micrometre; optical fibre amplifiers; small signal gain coefficients

Subjects: Optical fibre fabrication, cladding, splicing, joining; Design of specific laser systems; Fibre lasers and amplifiers; Fibre optics; Optical propagation, dispersion and attenuation in fibres; Fibre lasers and amplifiers

References

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      • Kobayashi, K., Nishida, Y., Ohishi, Y., Kanamori, T., Sudo, S., Sugii, K.: `Preparation of high-purity raw materials for InF', Za5.2, MRS Fall Meeting, 1994, Boston, USA, p. 728.
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      • Y. Nishida , T. Kanamori , Y. Ohishi , M. Yamada , K. Kobayashi , S. Sudo . Efficient PDFA module using high-NA PbF2/InF3-basedfluoride fiber. IEEE Photonics. Technol. Lett. , 3 , 318 - 320
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      • Nishida, Y., Yamada, M., Temmyo, J., Kanamori, T., Ohishi, Y.: `Plug-in type 1.3-µm fiber amplifier module for rack-mounted shelves', OFC '97 Tech. Dig., 1997, p. 108–.
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      • Y. Ohishi , S. Sakaguchi . Transmission loss characteristics of fluoride glass singlemode fibre. Electron. Lett. , 20 , 1034 - 1035
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      • Ohishi, Y., Kanamori, T., Nishi, T., Nishida, Y., Takahashi, S.: `Quantum efficiency at 1.3 µm of Pr', Proc. XVI Int. Conf. Glass, 1992, 2, Madrid, Spain, p. 73–78.
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      • T. Kanamori , Y. Terunuma , K. Fujiura , K. Oikawa , S. Takahashi . Fabrication of fluoride single-mode optical fibres. NTT R&D , 9 , 1353 - 1362
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      • M. Yamada , M. Shimizu , T. Kanamori , Y. Ohishi , Y. Terunuma , K. Oikawa , H. Yoshinaga , K. Kikushima , Y. Miyamoto , S. Sudo . Low-noise and high-power Pr3+-doped fluoride fiber amplifier. IEEE Photonics. Technol. Lett. , 869 - 871
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