Optical receivers; Optical semiconductor amplifiers; Optical semiconductors; Optical sensors; Satellite transceivers; Satellite transmitters and receivers; Electronic and optical communications instruments and components, namely, optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Electronic and optical communications instruments and components, namely, optical transmitters; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, digital transmitters
Electrical and Scientific Apparatus