Acta Photonica Sinica, Volume. 36, Issue 6, 966(2007)

A Bi-directionally Pumped S-band Thulium-doped Silica Fiber Amplifier Using Up-conversion Pumping at 1 064 nm

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    The TDFA (Thulium-Doped Fiber Amplifier) is a promising candidate for an amplifying device in S band. We established a bi-directionally pumped Thulium-Doped Silica Fiber Amplifier (TDSFA) with a single 1 064 nm pump wavelength in order to know the characteristics of the amplifier. The on-off gain was measured for simplicity. The gain varying with pump power and with signal wavelength was studied in detail. At the maximum launched pump power of 1 400 mW, the amplifier had a gain over a wide wavelength region of 1 485 to 1 517 nm, with a peak gain of 3.76 dB. Weak GSA (Ground-State Absorption) and strong ESA (Excited-State Absorption) limit the further increase of the gain. The results show that TDSFA is operable using such an upconversion pumping scheme.

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    [in Chinese], [in Chinese], [in Chinese], [in Chinese]. A Bi-directionally Pumped S-band Thulium-doped Silica Fiber Amplifier Using Up-conversion Pumping at 1 064 nm[J]. Acta Photonica Sinica, 2007, 36(6): 966

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    Received: May. 23, 2006

    Accepted: --

    Published Online: Sep. 17, 2007

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