Improvement of nonlinear modulation by cascaded mach-zehnder configuration

Ching Ting Lee, How Chiang Lee, Lih Gen Sheu

Research output: Contribution to journalArticlepeer-review


A two-stage cascaded Mach-Zehnder modulator is employed for the linear external modulation of a laser. The modulation electric fields are applied on the first and second stages in the Z and Y directions, respectively. Because of the inherent versatility of the adjustable modulation parameters, improved modulation performances with a high modulation depth and a high linear response are demonstrated. When a modulation depth of 21% is required, the ratios of the second and third harmonic terms to the fundamental term can be simultaneously achieved as low as — 104 and — 86.7 dB, respectively.

Original languageEnglish
Pages (from-to)119-130
Number of pages12
JournalFiber and Integrated Optics
Issue number2
Publication statusPublished - 1998 Apr

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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