Nawrocka Marta, Lu Qiaoyin, Guo Wei-Hua, Abdullaev Azat, Bello Frank, O'Callaghan James, Cathcart Thomas, Donegan John F
Opt Express. 2014 Aug 11;22(16):18949-57. doi: 10.1364/OE.22.018949.
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.
