Abstract: Polarization-diverse optical devices and related methods are disclosed. In some embodiments, these devices and methods are realized by utilizing a four-port, wavelength-dependent optical coupler that is arranged to receive identical counter-propagating optical signals.

Abstract: Polarization-diverse optical devices and related methods are disclosed. In some embodiments, these devices and methods are realized by utilizing a four-port, wavelength-dependent optical coupler that is arranged to receive identical counter-propagating optical signals.

Abstract: The invention relates to a device for receiving, processing and transmitting optical and electrical signals, comprising: an optical or processing optical signals; a connection for optically coupling an optical wave-guide such as a glass fibre to the optical circuit; at least one opto-electrical converter for converting an optical signal into an electrical signal, which opto-electrical converter is coupled optically to the optical circuit and which opto-electrical converter can be coupled electrically to an electronic appliance, and at least one electro-optical converter for converting an electrical signal into an optical signal, which electro-optical converter is coupled optically to the optical circuit. The invention also relates to a method for manufacturing such a device.