wavelength through Fused Biconic Taper (FBT) technique. Optical power can be split into 1/99, 2/98, 10/90, 20/80, 30/70 etc.
Fiber length can be customized.
Connectors are optional, such as SC LC FC ST and so on.
Packing is custom too, steel tube, ABS box, LGX Box etc.