Open AccessWidely tunable six-section semiconductor laser based on etched slots
Author(s) -
Marta Nawrocka,
Qiaoyin Lu,
Weihua Guo,
Azat Abdullaev,
Frank Bello,
James O’Callaghan,
Thomas Cathcart,
John F. Donegan
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.018949
Subject(s) - optics , materials science , laser , optoelectronics , semiconductor laser theory , vernier scale , fabrication , photonics , optical amplifier , distributed feedback laser , semiconductor , waveguide , tunable laser , medicine , physics , alternative medicine , pathology
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.