Minimization of cross-talk in a multi-mode fiber

A computer program product for use in minimizing cross-talk between optical modes propagating in a multi-mode optical fiber, the computer program product being located on a non-transitory computer readable medium and comprising instructions for operation by a computing device, said instructions comprising:

• instructions configured for simulating the transmission of an optical field through a multi-mode optical fiber so as to simulate the superposition of a plurality of optical wavefunctions at an output of the multi-mode optical fiber;
• instructions configured for determining a relationship between at least one measure of orthogonality of the optical wavefunctions at the output of the multi-mode optical fiber and each superposition of a plurality of superpositions of at least some of the optical wavefunctions at the output of the multi-mode optical fiber;
• instructions configured for identifying optimum superposition of at least some of the optical wavefunctions that provides a desired or optimized value of the at least one measure of orthogonality using the determined relationship;
• and
• instructions configured for generating, using light from a laser and at least one optical component, the identified superposition of at least some of the optical wavefunctions that provides the desired or optimized value of the at least one measure of orthogonality at the output of the multi-mode optical fiber.

A device adapted to superimpose a plurality of optical wavefunctions so as to minimize cross-talk between optical modes propagating in a multi-mode optical fiber, by generating, using light from a laser, an identified optimum superposition of the optical wavefunctions at an output of the multi-mode optical fiber that provides a desired or optimized value of at least one measure of orthogonality of the optical wavefunctions at the output of the multi-mode optical fiber, the identified optimum superposition of optical wavefunctions being determined using the following operations:

• transmitting an optical field through the multi-mode optical fiber so as to superimpose a plurality of the optical wavefunctions at the output of the multi-mode optical fiber;
• determining a relationship between superpositions of at least some of the optical wavefunctions and the at least one measure of orthogonality of the optical wavefunctions at the output of the multi-mode optical fiber and each superposition of a plurality of superpositions of at least some of the optical wavefunctions at the output of the multi-mode optical fiber;
• and
• identifying the optimum superposition of at least some of the optical wavefunctions that provides a desired or optimized value of the at least one measure of orthogonality using the determined relationship at the output of the multi-mode optical fiber.