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System experiments with multimode waveguides and fibers for applications in computer interconnects

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1 Author(s)
Olsen, C.M. ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

The effect on the modal noise induced bit-error-rate floor when passing light through short lengths (0.5→70 mm) of large core epoxy ridge waveguides and multimode fibers was investigated. It was demonstrated that the bit-error-rate floor declines rapidly with the waveguide transmission distance, whereas for the multimode fiber the floor is independent of the length. The issue of estimating modal noise bit-error-rate floors at realistic levels of the mode selective loss is addressed. The experimental set-up is discussed, and the results of modal noise system experiments performed at 1 Gb/s non-return-to-zero (NRZ) are presented. Worst-case requirements to the waveguide design are discussed

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Lightwave Technology, Journal of  (Volume:9 ,  Issue: 12 )