Wavelength multiplexing multichannel optical attenuator having luminous input stream polarization separation assembly and control unit modifying and recombining beam polarization on output

摘要

The optical attenuator has a fibre optic input (1) for a luminous input stream. A polarization separation assembly (4) receives the stream and separates beams (5). A control unit (10) modifies the beam polarization. The beams are recombined in a recombination assembly. There is a programmable electronic control.