Abstract
The modulation response of an optically injected gain-lever semiconductor laser is studied for the first time using small-signal analysis of a rate equation model. Calculations show that a gain-lever laser operating under medium to strong optical injection provides a unique and robust configuration for ultralarge bandwidth enhancement. Modulation bandwidths above nine times the relaxation oscillation frequency of the free-running laser can be reached using injection-locking conditions that are reasonable for practical applications. This theoretical work is of prime importance for the development of directly modulated broadband optical sources for high-speed operation at 40 Gb/s and beyond.
| Original language | English |
|---|---|
| Article number | 07124456 |
| Pages (from-to) | 575-582 |
| Number of pages | 8 |
| Journal | IEEE Journal on Selected Topics in Quantum Electronics |
| Volume | 21 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Nov 2015 |
| Externally published | Yes |
Keywords
- Semiconductor laser
- bandwidth
- gain lever
- modulation response
- optical injection