Abstract
The external optical feedback-sensitivity of a two-section, passively mode-locked quantum dot laser operating at elevated temperature is experimentally investigated as a function of absorber bias voltage. Results show that the reverse-bias voltage on the absorber has a direct impact on the damping rate of the free-running relaxation oscillations of the optical signal output, thereby enabling interactive external control over the feedback-response of the device, even under the nearly resonant cavity configuration. The combination of high temperature operation and tunable feedback-sensitivity is highly promising from a technological standpoint, in particular, for applications requiring monolithic integration of multi-component architectures on a single chip in order to accomplish, for instance, the dual-objectives of stable pulse quality and isolation from parasitic reflections.
Original language | English |
---|---|
Article number | 041112 |
Journal | Applied Physics Letters |
Volume | 105 |
Issue number | 4 |
DOIs | |
Publication status | Published - Jul 28 2014 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)