Resonant optical amplification is studied both theoretically and experimentally. Coupled rate equations for the signal field and the spontaneous emission field, valid for input signals with bit rates up to 10 Gb/s are derived. A special weighing procedure based on a dwell-time analysis is used to account for bistable filter operation. The measured amplification characteristics of a λ/4 DFB laser injected with a 2.5 Gb/s signal show good agreement with theory.
- semiconductor laser
- resonant amplification