Abstract
In this letter, the effects of bending losses for the development of tunable supercontinuum sources are numerically and experimentally analyzed. Here, the proposed supercontinuum source is based on a very short length segment of standard single-mode fiber (SMF-28) which was used as a nonlinear medium and it was pumped by a microchip Q-switch laser at 1064 nm. In the experimental setup, a section of the optical fiber was wrapped around a mandrel in order to induce bending losses. In addition, by changing the fiber wrapping settings of the SMF-28 the SC source spectrum was filtered at some wavelengths due to mechanical stress. Hence, the source bandwidth can be increased or decreased by selecting the fiber length and by modifying the wrapping settings. Furthermore, in this work it is described as a numerical analysis which helps to support our experimental results. This numerical analysis was based on the fourth-order Runge–Kutta in the interaction picture method and the beam propagation method.
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