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Slow/fast light using a very short Er3+/Yb3+ co-doped fiber
Jiulin Gan1, Jiali Chen, Shanhui Xu
1State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Abstract:
A slow/fast light device with a sealed size of 130 mm×30 mm×3 mm has been demonstrated. Ultraslow propagation and superluminal propagation with group velocity values from 8.4 to -14.7 m/s are observed in a 3.86 cm long Er3+/Yb3+ co-doped single-mode phosphate glass fiber. The dependence of pump power, modulation frequency, and wavelength on the slow/fast light effect in this fiber is investigated in detail. These results suggest that this compact slow/fast device is more suitable for all-fiber applications than those made by traditional methods.
