Title :
Improving the Modulation Bandwidth in Semiconductor Lasers by Passive Feedback
Author :
Radziunas, Mindaugas ; Glitzky, Annegret ; Bandelow, Uwe ; Wolfrum, Matthias ; Troppenz, Ute ; Kreissl, Jochen ; Rehbein, Wolfgang
Author_Institution :
Weierstrass- Inst. fur Angewandte Anal. und Stochastik, Berlin
Abstract :
We explore the concept of passive-feedback lasers (PFLs) for direct signal modulation at 40 Gb/s. Based on numerical simulation and bifurcation analysis, we explain the main mechanisms in these devices that are crucial for modulation at high speed. The predicted effects are demonstrated experimentally by means of correspondingly designed devices. In particular, a significant improvement of the modulation bandwidth at low-injection currents can be demonstrated
Keywords :
bifurcation; laser feedback; optical modulation; semiconductor lasers; bifurcation; injection current; modulation bandwidth; passive feedback; semiconductor lasers; Bandwidth; Distributed feedback devices; Laser feedback; Laser modes; Laser theory; Optical feedback; Optical transmitters; Resonance; Resonant frequency; Semiconductor lasers; Damping; direct modulation; eye diagram; large signal response; modulation bandwidth; passive feedback; semiconductor laser; small signal response;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2006.885332
