Widely tunable six-section semiconductor laser based on etched slots

  • Marta Nawrocka
  • , Qiaoyin Lu
  • , Wei Hua Guo
  • , Azat Abdullaev
  • , Frank Bello
  • , James O'Callaghan
  • , Thomas Cathcart
  • , John F. Donegan

Research output: Contribution to journalArticlepeer-review

Abstract

A six section widely tunable laser based on slots etched into the waveguide is presented. This laser is re-growth free which makes it suitable for photonics integration. To improve the laser performance, the front and the back facets are anti- reflection (AR) coated and the laser is integrated with a semiconductor optical amplifier. A tuning range of 55nm covering 12 supermodes with side mode suppression ratio (SMSR) >30dB is reported for the fabricated device using the Vernier tuning effect. This laser platform requires very simple fabrication compared with more complex superstructure gratings.

Original languageEnglish
Pages (from-to)18949-18957
Number of pages9
JournalOptics Express
Volume22
Issue number16
DOIs
Publication statusPublished - 11 Aug 2014

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