Semi-conductor waveguide photoreceiver with multiple quantum wells for polarisation diversity communications systems.

摘要

This photodetector comprises at least one pairing of a first photodetector unit (76) and a second photodetector unit (78). At least the first photodetector unit is formed on a semiconductor substrate (94) and includes a multilayer strip (100) with multiple quantum wells of semiconductor materials, this multilayer strip being intended to guide incident light, the first photodetector unit being capable of absorbing the transverse magnetic component of this light, the electric field of which has a component perpendicular to the plane of the multilayer, the transverse electric component of this light being absorbed practically not at all in the first photodetector unit, the second photodetector unit being intended to absorb this transverse electric component. <IMAGE>