Prior Cano, EstefaniaDios Fernández, Cristina deOrtsiefer, MarkusMeissner, PeterAcedo Gallardo, Pablo2017-02-202017-02-202015-11-15Journal of lightwave technology, (2015), 33 (22), pp. 4572-45790733-8724https://hdl.handle.net/10016/24241In this work we carry out a experimental study on the polarization properties of a Vertical-Cavity Surface-Emitting Laser (VCSEL) working under Gain Switching (GS) regime and the characteristics of the resulting optical frequency comb signal. We have observed that each of the two polarization modes presented in the VCSEL Continuous Wave (CW) emission spectrum generate a separate Optical Frequency Comb (OFC) whose modes are phase correlated thanks to the GS regime. We study how these combs associated to the main and orthogonal polarization modes respectively vary depending on the input parameters to the VCSEL (bias current and radiofrequency power and frequency). The correlation between both OFCs in the best operation point as defined by the OFC characteristics is also evaluated. Therefore, this work demonstrates that two orthogonally polarized combs are generated that exhibit a high correlation between each other that combine to produce a wider overall optical comb. Hence, we can predict the feasibility of dual-polarization VCSEL-based Optical Frequency Comb Generators (OFCGs) in the few GHz repetition frequency rates, with highly correlated modes and continuously tunable distance between them, in a compact and energy and cost efficient system that can find application in ultrafast laser dynamics studies and or in polarization-division multiplexing optical communications.8application/pdfeng© 2015 IEEE.Gain switchingLaser diodesPolarization switchingOptical frequency comb generatorOrthogonal modeVertical-cavity surface-emitting laserEnergy efficiencyresearch articleElectrónicahttps://doi.org/10.1109/JLT.2015.2476956open access4572224579Journal of lightwave technology33AR/0000018521