Optical Communications Technology and Modulation Formats 16 ...

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DWDM Filter CompatibilityStrataLight proprietary and confidential information
40Gbps Modulation Scheme ComparisonStratalightPSBT NRZ-DPSK RZ-DPSK DQPSK PM-QPSKRelative cost estimate 0% +10% +30% +50% +70%Spectral efficiency 0.8bits/Hz 0.8bits/Hz 0.8bits/Hz 0.8bits/Hz 2bits/HzIntrinsic CD tolerance 320ps/nm 100ps/nm 60ps/nm 200ps/nm (1)1 st order PMD tolerance 2.1ps 2.5ps 2.8ps 5ps 30ps2 nd order PMD tolerance HIGH MEDIUM LOW HIGH HIGHOSNR sensitivity 17.5dB 13.9dB 13.9dB 15dB 11dBReach 800km 1,600km 1,600km 1,000km 2,000kmPenalty per ROADM negligible 0.2dB 0.2dB negligible negligibleNon-linear X-talk from 10G low low low high high(1)CD tolerance depends on # taps in FIR filterStrataLight proprietary and confidential information 33
Page 8 and 9: Optical Impairments• Polarization
Page 10 and 11: From 10 Gbps to 40Gbps• Optics•
Page 12 and 13: Modulation SchemesStrataLight propr
Page 14 and 15: Modulation SchemesModulation Attrib
Page 16 and 17: Carrier Suppressed Return to Zero (
Page 18 and 19: Differential Phase Shift Keying (DP
Page 20 and 21: Transmitted SpectraROADM50GHz Profi
Page 22 and 23: Differential Quaternary Phase Shift
Page 24 and 25: Transmitted SpectraROADM50GHz Profi
Page 26 and 27: Transmitter Block DiagramsPSBTI inN
Page 28 and 29: DWDM Filter CompatibilityStrataLigh
Page 30 and 31: DWDM Filter CompatibilityStrataLigh
Page 34 and 35: Performance at 40GbpsStrataLight pr
Page 36 and 37: DPSK WDM Penalty• 50G grid: at th
Page 38 and 39: Conclusions and Summary• Metro Ap
Page 40 and 41: Technical LeadershipStrataLight pro
Page 42 and 43: High level market requirements• M
Page 44 and 45: Development solution - PM-QPSKTx Bl

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