| CPC H04B 10/40 (2013.01) [G02B 6/4246 (2013.01); H04B 10/2589 (2020.05)] | 10 Claims |
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1. A single-optical-fiber bidirectional transceiving device, comprising:
an optical input port, an optical output port, and a composite optical transmission port;
wherein the optical input port is located on a first end face, and is configured to output an emitting signal, which is input from the optical input port, to the composite optical transmission port;
the optical output port is located on the first end face in parallel with the optical input port, and is configured to output a receiving input from the composite optical transmission port; and
the composite optical transmission port is located on a second end face opposite to the first end face, and is configured to be coupled with an optical fiber;
a bidirectional optical transmission assembly and an optical guide assembly, both of which are located between the first end face and the second end face, the bidirectional optical transmission assembly being located between the second end face and the optical guide assembly, and the optical guide assembly being located between the first end face and the bidirectional optical transmission assembly,
wherein the bidirectional optical transmission assembly is configured to transmit the receiving signal input from the composite optical transmission port to the optical guide assembly, and transmit the emitting signal output from the optical guide assembly to the composite optical transmission port;
wherein the optical guide assembly is configured to transmit the emitting signal input from the optical input port to the bidirectional optical transmission assembly, and transmit the receiving signal output from the bidirectional optical transmission assembly to the optical output port,
wherein the bidirectional optical transmission assembly comprises:
a first transmission assembly, a second transmission assembly, and a third transmission assembly, which are located sequentially in a direction from the first end face to the second end face in the bidirectional optical transmission assembly,
wherein the first transmission assembly comprises a first polarization light-splitting prism and an optical path offset prism connected to the first polarization light-splitting prism in a vertical direction, wherein the first polarization light-splitting prism has a first prism end face and a second prism end face, and the optical path offset prism has a third prism end face and a fourth prism end face, the third prism end face being bonded with the first prism end face;
the second transmission assembly comprises a Faraday rotating plate, and a first half-wave plate, a second half-wave plate and a third half-wave plate which three are bonded with surfaces of the Faraday rotating plate, wherein the first half-wave plate and the second half-wave plate are both bonded with a first surface of the Faraday rotating plate, the first half-wave plate being bonded with an upper half portion of the first surface, the second half-wave plate being bonded with a lower half portion of the first surface; the third half-wave plate is bonded with a lower half portion of a second surface of the Faraday rotating plate, directly facing the second half-wave plate; and the first surface and the second surface are two faces directly facing the Faraday rotating plate in parallel; and
the third transmission assembly comprises a second polarization light-splitting prism and a triangular prism which are connected in a vertical direction, wherein the second polarization light-splitting prism has a fifth prism end face and a sixth prism end face, the fifth prism end face is connected with an inclined surface of the triangular prism; and a vertical surface of the triangular prism in the vertical direction is directly facing the third half-wave plate.
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