Nonlinear phase shifts of modulated light waves with slow and superluminal group delay in stimulated Brillouin scattering.
Brillouin amplification with counterpropagating modulated pump and Stokes light leads to nonlinear modulation-phase shifts of the interacting intensity waves. This is due to a partial transformation of the nonmodulated light component at the input into modulated light at the output as a result of a mixing process with the counterpropagating modulated component of the pump and results in an advance or delay of the input modulation. This occurs for interactions over less than half of a modulation wavelength. Milliwatts of power in a kilometer of standard single-mode fiber give significant tunability of the modulation phase.
Arditi
Tal
T
Department of Electrical and Electronics Engineering, Ariel University Center of Samaria, Ariel, Israel.
Granot
Er'el
E
Sternklar
Shmuel
S