FIN provides high performance standard tree splitter module, LGX module and 19 Inch Rack, in which standard tree splitter module owns the configurations: 1X4, 1X8, 1X16, 1X32, 2X2, 2X4, 2X8, 2X16, 2X32, Which can offer low insertion loss, low polarization dependence, well controlled uniformity as well excellent environmental stability. They all have been extensively used to split and mix optical signals in CATV, LANS and all the kinds of optical communication systems.