Sensitivity of quantum dot lasers to optical feedback

Guillaume Huyet 

National College of Ireland, Physic Department, Cork, Ireland

Abstract

Bulk and quantum well semiconductor lasers are extremely sensitive to back reflections and the optical isolators are commonly used in photonics network to prevent the appearance of instabilities that deteriorate the bandwidth. Here we will analyse, both theoretically and experimentally, the sensitivity of quantum dot semiconductor lasers to optical feedback. In particular, we will show that these devices have indeed a reduced sensitivity to optical feedback although the line-width enhancement factor is relatively large and show that this can be associated with the gain saturation characteristic of quantum
dot devices.

 

Presentation: invited oral at E-MRS Fall Meeting 2003, Symposium C, by Guillaume Huyet
See On-line Journal of E-MRS Fall Meeting 2003

Submitted: 2003-05-13 09:41
Revised:   2009-06-08 12:55