Theorical and numerical analysis of an all-optical delta-sigma modulator

Nima Davoudzadeh, Lynford L Goddard, Mohammad R. Sayeh

Research output: Contribution to journalArticle


Delta-sigma modulation is a powerful technique for optical signal processing due to its high bandwidth, noise immunity, and low cost. In this article, a theory for all-optical delta-sigma modulation is presented along with the calculation and design parameters for optical system implementation. An optical delta-sigma modulator can be used in a microwave photonic link to encode the radio frequency signal into the duty cycle of the optical pulses. Simulation results are presented that confirm the theory and also the possibility of reaching a few GHz modulation rate in a chip-level implementation.

Original languageEnglish (US)
Pages (from-to)1168-1173
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number5
StatePublished - May 1 2017
Externally publishedYes


  • microwave photonics
  • optical bistability
  • optical communication equipment
  • optical modulation
  • optical signal processing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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