Silica multi-core optical fibers have been the common fiber for imaging but the growing interest in other fields aside telecommunication, such as medical and biological, requires new solutions. In these fields the wavelengths of interest are in the near and mid-IR known for their harmless interaction with biomedical objects. To operate in this range new materials are required, and tellurite glasses offers a broad transparency window for this. They also have a large refractive index, high thermal and chemical stability, low intrinsic loss, and they are easy to modify with dopants. Issues with the old silica multi-core fibers are not only caused by the material but by the quality of the image transported by them, that’s why new designs are studied.