Optical two-tone generation and SSB modulation using electro-optic modulator with suppressing redundant spectrum components

Akira Enokihara, Tadashi Kawai, Tetsuya Kawanishi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Doubled frequency optical two-tone generation and optical single sideband (SSB) modulation by the dual-electrode-type electro-optic (EO) modulator with a single Machâ€"Zehnder (MZ) interferometer were considered. We theoretically showed that redundant spectrum components in the modulated optical signals, which are caused by the imbalance of light splitting ratio between the two arms of the interferometer, are significantly suppressed by controlling the input power ratio of RF modulation signals applied to each electrode. This effect was confirmed by the experiment, where an optical two-tone with the redundant components 49.8 dB lower than the primary two-tone components in intensity level was obtained. This method is also valid for suppression of undesired frequency components of RF signals that are generated at a photo detector from the optical two-tone waves propagated through a dispersive optical fiber.

Original languageEnglish
Pages (from-to)295-300
Number of pages6
JournalInternational Journal of Microwave and Wireless Technologies
Volume3
Issue number3
DOIs
Publication statusPublished - 2011 Jun 1
Externally publishedYes

Keywords

  • Electro-optical modulator
  • Optical fiber transmission
  • Optical two-tone
  • SSB modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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