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Nonlinear optical correction of the pulse shape from a directly modulated DFB laser |
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| Authors: | R Rojas-Laguna J Gutierrez-Gutierrez MA Bello-Jimenez JM Estudillo-Ayala |
| Institution: | a Universidad de Guanajuato, Facultad de Ingeniería Mecánica, Eléctrica y Electrónica, Apartado Postal 215-A, Salamanca, Gto., C.P. 36730, Mexico b Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro No. 1, Departamento de Óptica, Puebla Pue., C.P. 72000, Mexico |
| Abstract: | In this work, the effect of modulation instability (MI) in optical fiber is used to reshape nanosecond pulses form a directly modulated diode laser. Our configuration includes a fiber where MI causes the side lobes in the signal spectrum and a filter at the fiber output rejecting the side lobes. Simulations show abrupt drop of the transmission of the setup if pulse power is above some critical value. We investigated the transmission for fibers with lengths in the range between 62-m and 4.5-km. The critical power was found to be inversely proportional to the fiber length. An average scaled critical power is 2.16 W km. We demonstrated the application of the method for rejection of the transient peak in a directly modulated diode laser. |
| Keywords: | 42 65 &minus k 42 60 Rn 42 81 &minus i |
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