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Upconversion pumped thulium-doped fluoride fiber amplifier and laser operating at 1.47 μm

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4 Author(s)
Komukai, T. ; Opt. Transmission Line Lab., NTT Access Network Syst. Labs., Ibaraki, Japan ; Yamamoto, Y. ; Sugawa, T. ; Miyajima, Y.

A 1.064-μm band upconversion pumped Tm3+-doped fluoride fiber amplifier and a laser both operating at 1.47 μm are investigated in detail. The two devices are based on the 3F 43H4 transition in a trivalent thulium ion, which is a self-terminating system. When pumped at 1.064 μm, the amplifier has a gain of over 10 dB from 1.44 to 1.51 μm and a low-noise characteristic. Also, the fiber laser generates a high-output power of over 100 mW with a slope efficiency of 59% at around 1.47 μm. These levels of performance will be important for optical communication systems

Published in:

Quantum Electronics, IEEE Journal of  (Volume:31 ,  Issue: 11 )

Date of Publication:

Nov 1995

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