Infrared and Laser Engineering, Volume. 52, Issue 1, 20220219(2023)
Investigation of the effect of narrow linewidth lasers on performance of coherent communication systems under atmosphere channels
Figures & Tables(5)
Fig. 1. Configuration of the space downlink coherent laser communication system under atmosphere turbulence
Fig. 2. (a) BER of space downlink coherent laser communication systems with narrow linewidth without the effect of atmosphere turbulence; (b) BER under the effect of fluctuations in optical signal intensity caused by atmosphere turbulence; (c) BER under the effect of fluctuations in optical signal phase caused by atmosphere turbulence; (d) BER under the effect of fluctuations in optical signal intensity and phase caused by atmosphere turbulence
Fig. 3. (a) Ratio of intensity noise to laser phase noise in a space downlink coherent laser communication system without the effect of atmosphere turbulence; (b) The ratio of intensity noise under the effect of atmosphere turbulence to phase noise caused by atmosphere turbulence; (c) Ratio of intensity noise under the effect of atmospheric turbulence to laser phase noise; (d) Ratio of noise under the effect of atmosphere turbulence to the phase noise of the laser
Fig. 4. (a) BER of a space downlink coherent laser communication system at a communication rate of 100 Mbps; (b) At a communication rate of 1 Gbps; (c) At a communication rate of 2.5 Gbps ; (d) At a communication rate of 10 Gbps
Table 1. Parameters of space downlink coherent laser communication system
View tableView in ArticleTable 1. Parameters of space downlink coherent laser communication system
Parameter Value Power of the transmitter laser LD1/mW 10 EDFA gain coefficient at the transmitter/dB 22 Loss coefficient αloss 1 Height of transmitting terminal H/km 36000 Height of receiving terminal h0/m 100 Central wavelength λ/nm 1550 Temperature T/K 300 Load resistance RL/Ω 50 Dark current idc(t)/nA 10 Communication rate/Gbps 2.5 Beam angle/rad 0 Beam divergence angle/μrad 30 Receiving aperture/m 0.1
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Wanwang Fu, You Guo, Yuexing Zhang, Jisun Chen, Yijun Jiang, Mi Li. Investigation of the effect of narrow linewidth lasers on performance of coherent communication systems under atmosphere channels[J]. Infrared and Laser Engineering, 2023, 52(1): 20220219
Paper Information
Category: Optical communication and sensing
Received: Apr. 15, 2022
Accepted: --
Published Online: Feb. 9, 2023
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