Optical communication devices with selective signal preclusion

An optical communication device comprising:

• a substrate defining:
• a first end;
• and
• a second end;
• a primary optical communication medium welded to the second end;
• a secondary optical communication medium welded to the second end;
• and
• a multimode interference (MMI) coupler configured to passively direct the optical signals to the primary optical communication medium and the secondary optical communication medium.

A method of manufacturing an optical communication device, the method comprising:

• providing a substrate defining:
• a first end;
• and
• a second end;
• welding a primary optical communication medium to the second end;
• welding a secondary optical communication medium to the second end;
• supporting a signal preclusion component by the substrate in a fixed state, the signal preclusion component configured to selectively preclude signal transmission of optical signals received via the first end to either the primary optical communication medium or the secondary optical communication medium.