Optical communication devices, namely, optical transmitters, receivers, couplers, splitters, filters, isolators and attenuators; Network communication devices, namely, hubs, switches and routers; Set top box, electrical transformers for telecommunications apparatus used for transforming digital video signals to analog video signals; Mobile data terminal (MDT), equipments used for receiving, decoding, compressing and transmitting data, namely, data processors; Sonars; Transmitters of electronic Signals; Telecommunication transmitters; Modems; Fiber optic cables; Anti-interference wireless devices, namely, filters for radio interference suppression