Optical injection dynamics of two-mode vertical cavity surface-emitting semiconductor lasers

Numerical Study of Optical Injection Dynamics of Vertical-Cavity Surface-Emitting Lasers

“…As could be expected, a rich variety of complex nonlinear behaviors occurs outside the injection locking region. In agreement with the experimental observations of Hong et al [10], we found parameter regions where the frequency of one mode locks to that of the injected field, while the frequency of the other mode remains unperturbed [ Fig. 5(a) and (c)].…”

“…It was assumed that the two transverse modes had orthogonal polarizations, and thus the externally injected field interfered only with one of the modes. More recently, Hong et al [10] studied experimentally the spectrum of a two-transverse-mode VCSEL under optical injection and found that, in agreement with the results of [2] and [9], when the two modes have orthogonal polarizations, suitably choosing the detuning and injection power allows the suppression of one mode. However, it was found that when the two transverse modes have parallel polarization single-mode operation could not be obtained via optical injection.…”

“…Since in multimode VCSELs the free-running modal powers are different, we measure the injection strength of the th mode relative to the free-running modal power . We therefore define the parameter as (10) Let us first consider the situation in which the fundamental mode dominates ( mA). Fig.…”

Nonlinear dynamics induced by parallel and orthogonal optical injection in 1550 nm Vertical-Cavity Surface-Emitting Lasers (VCSELs)

“…Additionally, the effect of polarized optical injection in VCSELs has attracted increasing interest in the last years [8][9][10][11][12][13][14][15][16][17][18][19][20][21]. In particular, orthogonally-polarized optical injection has been used to obtain Polarization Switching (PS) and Polarization Bistability (PB) in short- [8] [9] and in long-wavelength VCSELs [10][11][12][13][14].…”

“…In particular, orthogonally-polarized optical injection has been used to obtain Polarization Switching (PS) and Polarization Bistability (PB) in short- [8] [9] and in long-wavelength VCSELs [10][11][12][13][14]. Single mode operation has been attained in multiple transverse mode VCSELs [15] under orthogonal optical injection. Also a wide variety of nonlinear dynamics has been recently theoretically [16][17][18] and experimentally [19] [20] reported in VCSELs subject to orthogonal injection.…”