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In this letter, we demonstrate a new spatially resolved photodetection and equalization technique that compensates for differential modal delay in multimode fiber (MMF) links. We experimentally demonstrate in excess of a two-fold bandwidth increase using a simple two-segment photodetector that retains all of the advantages associated with multimode fiber including alignment tolerance. Furthermore, we characterize the MMF output in the far-field demonstrating that the temporal response depends upon spatial coordinate and allowing numerical optimization of the technique.
Date of Publication: March 2002