Travelling-wave Mach-Zehnder modulator as a temporal integrator and a time-gate isolator

Binhuang Song, Leimeng Zhuang, Arthur J. Lowery

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)


This letter demonstrates that a commercial travelling-wave Mach-Zehnder modulator is a versatile device. Next to being a modulator, it is also able to function as an electrooptical temporal integrator with an integration window twice as long as its propagation delay. Using the similar principle and being driven by a periodic RF frequency, the modulator is able to perform as an optical time-gate isolator that blocks any reversetravelling lightwave, but simultaneously allows forward-travelling periodically-pulsed optical signals to pass. In the experiment, subnanosecond forward-travelling time gates and reverse-travelling optical power extinction >20 dB are successfully demonstrated.

Original languageEnglish
Article number7924367
Pages (from-to)1101-1104
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number13
Publication statusPublished - 1 Jul 2017


  • isolators.
  • microwave photonics
  • temporal integrator
  • Travelling-wave Mach-Zehnder modulator

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