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A 170-Gb/s all-optical 2R regenerator made up of a fast saturable absorber and a highly nonlinear-fiber-based power limiter is reported for the first time. Bit-error-rate assessment of one of the four 42.5-Gb/s optical time-division-multiplexed tributaries shows a receiver sensitivity improvement.
We demonstrate a simple technique to measure the modal content of a multi-mode optical fiber by using a tunable source and a camera, and processing the near-field images measured at the fiber output.
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