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Mutual optical injection in coupled DBR laser pairs
M P Vaughan1, I Henning, M J Adams
1School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK.
Abstract:
We report an experimental study of nonlinear effects, characteristic of mutual optical coupling, in an ultra-short coupling regime observed in a distributed Bragg reflector laser pair fabricated on the same chip. Optical feedback is amplified via a double pass through a common on-chip optical amplifier, which introduces further nonlinear phenomena. Optical coupling has been introduced via back reflection from a cleave-ended fibre. The coupling may be varied in strength by varying the distance of the fibre from the output of the chip, without significantly affecting the coupling time.
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