Waveform shaping of chirp-controlled signal by semiconductor optical amplifier using Mach-Zehnder frequency discriminator

Toshio Watanabe, Hiroshi Yasaka, Norio Sakaida, Masafumi Koga

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The optical output waveform of a semiconductor optical amplifier (SOA) is shaped using a Mach-Zehnder interferometer (MZI) as a frequency discriminator in order to suppress its distortion at high SOA input powers. This technique is applied to chirp control of an optical signal using an SOA, and the chirp control with waveform shaping greatly improves the transmission performance of a positively chirped optical signal in standard single-mode fiber over a wide range of SOA input powers. We also demonstrate that the chirp control with waveform shaping can be achieved without changing the drive settings of the SOA and MZI, even when the optical frequency is switched to another channel located on the wavelength-division-multiplexing frequency grid.

Original languageEnglish
Pages (from-to)1422-1424
Number of pages3
JournalIEEE Photonics Technology Letters
Volume10
Issue number10
DOIs
Publication statusPublished - 1998 Oct 1
Externally publishedYes

Keywords

  • Chirp
  • Electroabsorption modulators
  • Mach-Zehnder interferometers
  • Optical fiber
  • Semiconductor optical amplifiers
  • Waveform shaping
  • Wavelength-division multiplexing

ASJC Scopus subject areas

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

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