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Laser diode pumped Pr <sup>3+</sup> -doped and Pr <sup>3+</sup> -Yb <sup>3+</sup> -codoped fluoride fibre amplifiers operating at 1.3 μm

DOI

45

Citations

0

References

1991

Year

Yasutake Ohishi, T. Kanamori, Jiro Temmyo, Masato Wada, Makoto Yamada, Makoto Shimizu, K. Yoshino, Hiroaki Hanafusa, M. Horiguchi, S. Takahashi
Electronics Letters

Abstract

Both Pr3+-doped and Pr3+-Yb3+-codoped singlemode fibres with high numerical apertures are pumped by laser diodes with InGaAs/GaAs strained quantum well structures. A net gain of 5.2 dB is obtained from Pr3+-doped fluoride fibre pumped by laser diodes operating at 1.017 μm and a net gain of 3.2 dB is obtained from Pr3+-Yb3+-codoped fibre pumped by laser diodes operating at 0.98 μm. The pumping efficiency difference between Pr3+-doped and Pr3+-Yb3+-codoped fibre is discussed.