Brillouin gain spectrum dependences on temperature and strain in erbium-doped optical fibers with different erbium concentrations

Ding, Mingjie; Hayashi, Neisei; Mizuno, Yosuke; Nakamura, Kentaro
May 2013
Applied Physics Letters;5/13/2013, Vol. 102 Issue 19, p191906
Academic Journal
Brillouin Stokes power in erbium-doped optical fibers (EDFs) can be potentially controlled by pumping, but no report has been provided on its detailed characterization. In this study, as the first step toward this goal, the Brillouin gain spectra in EDFs with three different erbium concentrations (0.72, 1.20, and 2.28 wtppt) are measured at 1.55 μm without pumping, and the Brillouin frequency shifts (BFSs) and their dependences on strain, temperature, and erbium concentration are fully investigated. In the EDF with 0.72-wtppt concentration, the BFS was 11.42 GHz, and its temperature and strain coefficients were 0.87 MHz/K and 479 MHz/%, respectively.


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