MONOSTASTIC OPTICAL TRANSCEIVER Russian patent published in 2017 - IPC H04B10/00 G02B6/125 G02B27/10 

FIELD: physics.

SUBSTANCE: monostatic optical transceiver comprises a transmitting optical fibre coupled to the transmitter, a receiving optical fibre coupled to the receiver combined through a fibre optic duplexer, the end face of the output fibre of which is placed near the focal plane of the monostatic optical system. The transmitting optical fibre is in the form of a single-clad light guide having a numerical aperture NA1, a core diameter D1, and a refractive index of the core n1. The receiving and output optical fibre is made in the form of a single fibre with one shell having a numerical aperture NA2, a core diameter D2, and a refractive index of the core n2, with the proviso that NA1/n1<NA2/n2 and D1<D2. The duplexer is made in the form of an angular optical connection between the transmitting and receiving fibres, with the end face of the output fibre of the duplexer ground at an angle (90°-β) to the geometric axis of the fibre.

EFFECT: ensuring the possibility of increasing the level of isolation of counter channels, reducing the losses of received radiation and using conventional, multimode and single-mode optical fibres with one shell.

4 cl, 2 dwg