Optical EngineeringOptimization of single-mode fiber coupling efficiency with an adaptive membrane mirror
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We propose and demonstrate the use of an adaptive membrane mirror to increase the efficiency of coupling light into optical singlemode fibers. The membrane mirror has an active area of 12 mm in diameter and is electrostatically activated by 37 electrodes. Two optimization algorithms are compared. The first one is a maximization algorithm, while the second one is an evolutionary algorithm. These algorithms are used either to optimize the electrode voltages or to optimize a set of low-order Zernike polynomials describing the membrane deformation.