Table 2 The physical parameters of the two-way communication.

From: Two-way free-space optics-based interface between fibre and 5G communication employing polarisation-orthogonal modulation

Parameter

Fibre

FSO

5G Wireless

Descriptions

• 1545.62 nm (DFB LD centre wavelength)

• 25 km SMF

• 6 dBm transmission loss

• 1 km FSO Link

• 2.2 dB Link Loss

• Doublet Lens concave lens + convex lens 50.8 mm (diameter) 150 mm (focal length)

Signal format

HA

PTFE Lens

Downstream

• 10-Gbps/38-GHz 5 G MMW

• 1-Gbps/4.4-GHz 5G Sub-6 GHz

Downstream

• 26.5–40 GHz 25 dBi gain Ka-band HA

• 4.4-5.1 GHz 15 dBi gain flat-panel antenna

• 4” (diameter)

• 151.5 mm (focal length)

Upstream

• 10-Gbps/26-GHz 5 G MMW

• 1-Gbps/3.7-GHz 5 G Sub-6 GHz

Upstream

• 18–26.5 GHz 20 dBi gain K-band HA

• 3.3–3.8 GHz 17 dBi gain flat-panel antenna

  1. The physical parameters of the two-way FSO (FSO, free-space optics)-based interface between fibre and 5G (5G, fifth-generation) communication, including fibre optics, FSO, and 5G wireless. DFB LD distributed feedback laser diode, SMF single-mode fibre, HA horn antenna, PTFE polytetrafluoroethylene.