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The authors have reduced the temperature dependence of the mean wavelength of an erbium-doped superfluorescent fibre source to below 0.08 pm/°C (0.05 ppm/°C) using a long period fibre grating. This is greater than a 100-fold improvement on the 9.6 pm/°C (6.2 ppm/°C) intrinsic temperature dependence of the source.
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Kersey et al. (1997) studied this question.
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