Abstract
A single growth step ridge waveguide InGaAs-GaAs distributed feedback (DFB) laser with second-order Ti surface gratings is described. The Ti gratings introduce a periodic variation of the loss in the cavity to promote single frequency emission. The device operates on single longitudinal and lateral modes, with a threshold current of 27.9 mA and more than 30 dB of side-mode suppression.
Original language | English (US) |
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Pages (from-to) | 422-424 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 9 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1997 |
Keywords
- Distributed feedback lasers
- Gratings
- Quantumwell lasers
- Semiconductor lasers
- Strain
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering