Chirp and System Performance of Integrated Laser Modulators

J. A.J. Fells, I. H. White, R. V. Penty, M. A. Gibbon, G. H.B. Thompson, A. P. Wright, R. A. Saunders, C. J. Armistead, E. M. Kimber

Research output: Contribution to journalArticlepeer-review


Time-resolved chirp measurements and laser-threshold measurements are used to understand the chirp performance of integrated laser electroabsorption modulators. The different effects of the intrinsic modulator chirp component and chirp caused by optical feedback, from reflection at the output facet into the laser, are observed. A figure of merit is introduced to assess the chirp performance, which shows good correlation with dispersion penalty measurements. The effect of reflection-induced chirp is considerably reduced by operating the modulator with negative chirp. An optimized device is reported, which delivers purely negative chirp with reasonable optical power.

Original languageEnglish
Pages (from-to)1279-1281
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
Publication statusPublished - 1 Jan 1995

ASJC Scopus subject areas

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


Dive into the research topics of 'Chirp and System Performance of Integrated Laser Modulators'. Together they form a unique fingerprint.

Cite this