Abstract
We present, to the best of our knowledge, the first experimental demonstration of reconfigurable all-optical on-chip multi-input-multi-output three-mode demultiplexing based on multi-plane light conversion. The demultiplexer consists of cascaded phase shifter arrays and multimode interference couplers integrated on a compact silicon chip. By optimizing the phase shifters, reconfigurable three-mode demultiplexing is experimentally realized with wavelength-dependent loss of less than 3dB and modal crosstalk of less than -10 dB over a 23nm optical bandwidth. Error-free mode demultiplexing of 40Gbps non-return-to-zero signal is also demonstrated.
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