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8 - Optical-Link Transmitter Circuits

Published online by Cambridge University Press:  05 December 2024

Glenn Cowan
Affiliation:
Concordia University, Montréal
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Summary

This chapter builds on the basic transmitter building blocks presented in Chapter 5 and applies them to optical links. The section on direct modulation discusses CML and SST circuits for driving laser diodes, along with how equalization can be added, incorporating concepts from Chapter 4. One aspect of laser diodes that is presented is their nonlinear behaviour that favours having different equalization for rising and falling edges, something not typically done in electrical links where channels are linear. Circuit design for modulator drivers is discussed in Section 8.2, including an overview of distributed amplifiers. Finally, microring modulator drivers are presented in Section 8.3. Since the basic IC building blocks have already been introduced in Chapter 5, this chapter emphasizes aspects particular to driving optical devices, such as the electrical modelling of the electronics/photonic packaging and the challenges in producing voltage swings beyond the breakdown voltage of the underlying CMOS technology.

Type
Chapter
Information
Mixed-Signal CMOS for Wireline Communication
Transistor-Level and System-Level Design Considerations
, pp. 203 - 223
Publisher: Cambridge University Press
Print publication year: 2024

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  • Optical-Link Transmitter Circuits
  • Glenn Cowan, Concordia University, Montréal
  • Book: Mixed-Signal CMOS for Wireline Communication
  • Online publication: 05 December 2024
  • Chapter DOI: https://doi.org/10.1017/9781108779791.009
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  • Optical-Link Transmitter Circuits
  • Glenn Cowan, Concordia University, Montréal
  • Book: Mixed-Signal CMOS for Wireline Communication
  • Online publication: 05 December 2024
  • Chapter DOI: https://doi.org/10.1017/9781108779791.009
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Optical-Link Transmitter Circuits
  • Glenn Cowan, Concordia University, Montréal
  • Book: Mixed-Signal CMOS for Wireline Communication
  • Online publication: 05 December 2024
  • Chapter DOI: https://doi.org/10.1017/9781108779791.009
Available formats
×