Thelight source is coupled into a single mode fiber. The light beam coming out of the SMF1 (object beam) is filtered by the polarizer LP1, collimated by the lens L4 and directed on the SLM, which
Assingle-mode fiber can cover the large distance up to 20-40 km, the regenerator is placed in between the distance of 20-40 km. In contrast, multimode fiber cover short distances and require to place the regenerator in every 2 km. Multimode fiber involves more than one light ray while single-mode includes a single ray of light. The fiber cost
fiberoptikyang menggunakan ukuran core yang cukup besar dibandingkan dengan single mode. Ukuran core kabel Multi mode secara umum adalah berkisar antara 50 sampai dengan 100 mikrometer. Biasanya ukuran NA yang terdapat di dalam kabel Multi mode pada umumnya adalah berkisar antara 0,20 hingga 0,29. Dengan ukuran yang besar dan NA yang tinggi
6HmfO.