Optical Communications Technology and Modulation Formats 16 ...

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Modulation SchemesModulation AttributesAmplitude Phase PolarizationNRZDPSKDQPSKPM-’X’CS/RZPSBTQPSK(N)RZ—(Non) Return to ZeroQPSK—Quadature Phase Shift KeyingPSBT—Phase Shaped Binary Transmission PM-’X’—Polarization MultiplexingCS-RZ—Carrier Suppressed Return to ZeroDPSK—Differential Phase Shift KeyingDQPSK—Differential Quadature Phase Shift KeyingStrataLight proprietary and confidential information
Non Return to Zero (NRZ)LASERIΦ3/2ππ1/2π01 1 0 1 043G• Intensity modulation format only• Widely used at 10Gbps• Simplest Transmitter/Receiver Configuration• Optical Spectrum has a carrier• Optical Spectrum is medium spectralefficiency• Spectral efficiency in actual systems at10Gbps and 50GHz grid => 0.2 bits/HzNRZ1/2πIm1√20πReOOK3/2πCONFIDENTIAL © 2007 STRATALIGHT COMMUNICATIONS ALL RIGHTS RESERVED. 15
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 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 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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