Abstract
Passively mode-locked laser devices are presented incorporating chirped distributed Bragg reflectors. The Bragg grating sections consist of post-growth, sidewall relief, tapered gratings, offering continuous chirp and modulation of the coupling coefficient. Blue-chirped gratings are found to compensate for the pulse chirp accumulated in the laser gain and absorption sections. Pulses are measured with the largest 3 dB bandwidths, up to 2.3 nm, and smallest pulsewidths, 1.49 ps, achieved in passively mode-locked DBR lasers.
Original language | English |
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Pages (from-to) | 492-499 |
Number of pages | 8 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 47 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2011 |
Keywords
- Bragg gratings
- chirp modulation
- dispersion compensation
- semiconductor lasers
- mode-locked lasers