Figure 1
From: A PDM-based bi-directional fibre-FSO integration with two RSOAs scheme
(a) P–I curve of the 1.55-μm VCSEL with a threshold current of 2.3 mA and a slope of around 26 mW/mA. (b) The modulation responses of the free-running VCSEL under different driving currents and the modulation response of the VCSEL with an injection locking scheme.
