Chapter 4: Part I Modulation Schemes

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Chapter 4: Part I

Modulation Schemes

Line Codes

NRZ and RZ pulse shapes

NRZ and RZ spectrum : polar

PSK and FSK

PSK signal generation

Optical Modulator

Directly modulated laser

Externally modulated laser

Lithium Niobate crystal

Mach-Zehnder Modulator

ASK modulation

Power transmission characteristics of MZM

RZ-ASK

PSK

Field transmission characteristics of MZM

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