Cancellation of fiber loss by semiconductor laser pumped Brillouin amplification at 1.5 μm

Olsson, N. A.; van der Ziel, J. P.
May 1986
Applied Physics Letters;5/19/1986, Vol. 48 Issue 20, p1329
Academic Journal
The propagation loss is canceled, and 5 dB of net gain is obtained by Brillouin amplification in a 37.5-km-long single-mode optical fiber. A narrow linewidth external cavity semiconductor laser is used as the pump source and a gain of 4.3 dB/mW pump power is measured. The Brillouin linewidth is measured to be 150 MHz in contrast to previous measurements of ∼20 MHz. The Brillouin Stokes shift was 11.3 GHz at 1.5 μm wavelength.


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