A bias condition monitor technique for the nested Mach-Zehnder modulator

Kaoru Higuma*, Shingo Mori, Tetsuya Kawanishi, Masayuki Izutsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A nested Mach-Zehnder (MZ) modulator, which consists of two sub MZ interferometers embedded in a main MZ interferometer, is a multifunctional modulator. It can work as an optical single side-band (SSB) modulator, a differential quadrature phase shift keying (DQPSK) modulator and so on. Despite difficulties due to their complex structure, in order to avoid the operation instability of such modulators the bias condition of each MZ interferometer must be controlled automatically according to the modulation formats. In this paper, we proposed a specific bias condition monitor technique to the nested modulator.

Original languageEnglish
Pages (from-to)238-242
Number of pages5
Journalieice electronics express
Issue number11
Publication statusPublished - 2006 Jun 10
Externally publishedYes


  • Bias control
  • Monitoring
  • Nested MZ modulator

ASJC Scopus subject areas

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


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