1a the mode scrambler consists of the multimode fiber itself we use a step index mmf and six sections of fiber squeezers these fiber squeezers add stress through piezoelectric actuators at different orientations on the multimode fiber typically with a 45 deg shift between adjacent sections 0 45 0 45 0 and 45 deg in the illustrated example. It uses a specialized general photonics technology to perform random polarization spatial mode scrambling inside the multimode fiber to enhance the uniformity of the output beam profile. The easiest way to make such a device is to create a simple mode scrambler with a multimode fiber under stress or laid in a tight serpentine followed by a gap loss.
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