Abstract
The first operation is reported of large area multitransversemode vertical cavity surface emitting lasers (VCSELs) to reduce the effect of modal noise in multimode fibre systems. A BER < 10−13 is measured with a 25 μm VCSEL operated at 1 Gbit/s in a multimode optical link with 10 dB of mode selective loss at 16 m. The reduction in modal noise is from a decrease in the coherence of the large VCSELs with multitransverse-mode operation.
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