An Electrooptic Feedforward System for Dynamic Control of a Quasi-Continuous-Wave Chirped Laser Source

Mandridis D., ÖZDÜR İ. T., Delfyett P. J.

IEEE PHOTONICS TECHNOLOGY LETTERS, vol.21, no.17, pp.1226-1228, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 17
  • Publication Date: 2009
  • Doi Number: 10.1109/lpt.2009.2024644
  • Journal Name: IEEE PHOTONICS TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1226-1228
  • Abdullah Gül University Affiliated: No

Abstract

In this letter, a feedforward system is developed for control of a quasi-continuous-wave (CW) chirped source. The goal of this study is to improve the uniformity of the temporal profile of a quasi-CW chirped laser source. The chirped spectrum input to the system is dynamically flattened using a feedforward scheme having bandwidth in excess of 1 GHz, resulting in more than three times reduction on the contrast of the input spectrum. A uniform chirped spectrum laser source can be used in time-stretched photonic analog-to-digital conversion, as part of laser radar system, or for optical coherence tomography.