Nonlinear Polarization Dynamics of VCSEL with Frequency Comb Injection

Abstract

We propose a new approach of broad frequency comb generation by exploiting the polar- ization dynamics in a VCSEL induced by parallel frequency comb injection. Polarization mode competition leads to two tunable combs with orthogonal polarization.

Polarization dynamics in VCSELs subject to optical frequency comb injection

“…Figure 2 is measured for injected comb spacing of Ω = 2 GHz. As we have learned from our previous manuscript, [40][41][42][43] injection of a narrow optical frequency comb with parallel or orthogonal polarization can sustain a two polarization comb dynamics in a singlemode VCSEL. For fixed injection parameters, i.e., detuning frequency of ∆ν = −17 GHz and injected power of P inj = 248.8 µW, we analyzed the impact of the polarization of the injected comb on the two polarization comb dynamics.…”

“…The injected comb is a narrow optical comb with three frequencies line. To realistically model our experimental configuration in, [40][41][42][43] we consider that the difference between the amplitudes of the injected comb lines is 12 dB. Figure 3 shows the polarization-resolved optical spectra of Xpolarization mode (X-PM) and Y-polarization mode (Y-PM), respectively.…”