High-performance electroabsorption modulators utilizing microwave reflection control technique

Hiroki Nakajima, Takayuki Yamanaka, Hideki Fukano, Munehisa Tamura, Yuichi Akage

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A microwave reflection control technique that improves the performance of electroabsorption modulators (EAMs) is presented. The technique exploits the superposition of incident and reflected electrical signals as a modulation signal to enhance the modulation signal voltage applied to EAMs and therefore differs from conventional impedance matching techniques in terms of operating principle. A nearly flat electrical-to-optical frequency response up to 50 GHz and significant improvement in eye openings at 40 Gbit/s have been achieved with the technique. The effects of the technique are demonstrated through both experimental and computational investigations.

Original languageEnglish
Pages (from-to)505-511
Number of pages7
JournalJournal of Lightwave Technology
Issue number5
Publication statusPublished - Mar 1 2008
Externally publishedYes


  • Electroabsorption modulator (EAM)
  • Impedance matching
  • Stub
  • Transmission line

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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