This lesson demonstrates the energy exchange between two optical solitons with orthogonal polarizations associated with the orthogonal Raman gain [1].

Using equations (17a) from the technical description of the Nonlinear dispersive fiber component it can be shown [1] that the energy exchange between two solitons:

Optical System Equation 1

where P1 > > P2 and Δ ω > 0 is approximately given by the following expression [1]:

Optical System Equation 2

Equation 2 denotes the energy of the weaker (low frequency) soliton.

The layout and its global parameters are shown in Figure 1.

Optical System System layout and global parameters

Optical System System layout and global parameters

Figure 1: System layout and global parameters

Figure 2 gives the setup for the nonlinear dispersive fiber component.

Optical System Setup parameters

Figure 2: Setup parameters

Figure 3 gives the comparison between the analytical result of Equation 2 and the results obtained with OptiSystem.

Optical System - Figure 3 -  Experimental and OptiSystem results

Figure 3: Experimental and OptiSystem results

References:
[1]C. R. Menyuk, M. N. Islam and J. P. Gordon, Optics Letters 16 p.566 (1991).