photonic lantern

integrating_sphere

Efficient multi-mode fiber to single-mode fiber coupling: comparison between the existing solutions

As described in a previous article, achieving an efficient light coupling from multimode fiber (MMF) to single mode fiber (SMF) is a difficult task, especially when trying to avoid any spectral losses while keeping an acceptable power conversion. The fiber to fiber coupling option, as well as the tapered fiber solution and the lenses system being discarded, other alternatives coupling systems have to be investigated. In the following article, the most common coupling setup, the integrating sphere as well as…