Discrete mode lasers for applications in access networks
Kaszubowska-Anandarajah, Aleksandra and Barry, Liam P. and Anandarajah, Prince M. and Guignard, Celine and Kelly, Brian and O'Gorman, J. (2007) Discrete mode lasers for applications in access networks. In: ICTON 2007 - 9th International Conference on Transparent Optical Networks, 1-5 July 2007, Rome, Italy.
Full text available as:
Fast development of the modern telecommunication networks such as fiber-to-the-home or radio-over-fiber systems require an inexpensive yet reliable optical transmitter for electro-optic conversion. Such devices should be able to generate stable, single moded optical signals suitable for athermal operation. Discrete Mode Lasers (DMLs) are able to fulfill all the above-mentioned requirements with the added benefit of low sensitivity to optical feedback. DMLs are essentially Fabry-Perot lasers in which the refractive index is modified by introducing perturbations along very small sections of the laser cavity. These modifications result in a single mode laser output with a very narrow linewidth (order of 400 kHz). In this paper, we demonstrate how a DML can outperform the commonly used/commercially available DFB lasers in terms of linewidth, sensitivity to optical feedback and transmission performance in the presence of feedback.
Archive Staff Only: edit this record