Fig. 8: The locking capability of the OIL-DFB laser in the experiment.
From: Coherent optical interconnects using Fermat number transform and hollow core fibre

a The picture of the OIL-DFB laser and the corresponding TEC module. b Lock rates of OIL for multiple injection powers under different frequency offsets between the LO component and the slave DFB laser. OIL optical injection locking, DFB distributed feedback, TEC thermoelectric cooler.