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. 2014 Aug 11;22(16):18949-57.
doi: 10.1364/OE.22.018949.

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
Free article

Widely tunable six-section semiconductor laser based on etched slots

Marta Nawrocka et al. Opt Express. .
Free article

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.

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