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prototype_101

10/11/18 10:05 AM

#40292 RE: Photonics_Guy #40289

Nice summary info, thanks Photonics Guy, notice for PAM4 there is >>

increased bit error rate or BER


So this is a reason the costs go much higher for EC

Remember Slide 17

• Advanced modulation requires a
lot of additional electronics for
digital signal processing (DSP)
• Dramatic increase in
transceiver electronic
content for PAM4
• Coherent requires even
more DSP
• Pushback on number of lanes
• 4 is preferred over 8 for
single-mode, 16 considered
only for multi-mode