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Effects of group-delay difference on ultrashort pulse propagation in an active nonlinear LPFG |
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| Authors: | Min Liu Kin Seng Chiang Fengchun Tian |
| Institution: | a College of Communication Engineering, Chongqing University, Chongqing, China b Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China c Key Lab of Optoelectronic Technology and Systems (Education Ministry of China), Chongqing University, Chongqing, China |
| Abstract: | The effects of group-delay difference in an active nonlinear long-period fiber grating (LPFG) made in an erbium-doped amplifying fiber (EDF) are investigated by proposing a general model that include the effects of detuning, group-delay difference, gain saturation, gain bandwidth and Kerr nonlinearity. In particular, we observe a new feature caused by the interaction between the group-delay difference and the gain bandwidth: the pulse breakup effect due to the group-delay difference can be suppressed by the finite bandwidth of the linear gain. |
| Keywords: | 42 79 Dj 42 65 Re 42 65 Wi 42 81 &minus i |
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