The Loop Wavelength Division Multiplexing Multi-Service Platform is designed to deliver a number of client data channels by multiplexing/demultiplexing several different wavelengths into/from an optical fiber. The platform provides up to 15 universal plug-in slots for mounting different modules, including Transponder, Muxponder, WDM filters, OLP modules and amplifier modules. Modular design of the platform makes it easier to select suitable modules for current needs and upgradable for future requirements.