Optics and Precision Engineering, Volume. 30, Issue 13, 1534(2022)
Deep-space laser communications telescope array based on single photon detector
Figures & Tables(6)
Table 1. Parameters of deep-space laser communications link
View tableView in ArticleTable 1. Parameters of deep-space laser communications link
Item Parameter Transmit laser power 5 W Transmitter divergence angle 10 μrad Transmitter pointing loss 1 μrad Link range 2.67AU Receive aperture diameter 10 m Transmit efficiency 0.75 atmosphere transmittance 0.45 Receiving efficiency 0.5 Planck constant 6.626 2×10-34 W·s2 Speed of light 3×108 m/s Laser wavelength 1 064 nm Coupling efficiency with AO 0.3
Table 2. Key Parameters of single photon detectors
View tableView in ArticleTable 2. Key Parameters of single photon detectors
Item Jitter time Dead time Count rate Dark count rate Quantum efficiency 光电倍增管 0.3 ns 几十ns 30 MHz 100 Hz 40%@可见光，<1%@近红外 雪崩光电二极管 40 ps
55 ps
100 ns
10 ns
10 MHz
100 MHz
25 Hz
2 kHz
65%@可见光
30%@近红外
超导临界温度跃迁单光子探测器 100 ns 1 μs 几十kHz 0.01 Hz 95% 量子点单光子计数器 >150 ns _ 10 MHz <1 Hz 58%@可见光，<1%@近红外 可见光单光子计数器 0.25 ns 100 ns 10 MHz 20 kHz 88%@694nm，93%@近红外 超导纳米线单光子探测器 50 ps ~10 ns 100 MHz 最小值0.1 Hz ~95%
Table 3. BER of telescopes in parallel connection
View tableView in ArticleTable 3. BER of telescopes in parallel connection
D（m）×n P1 Night SEP=3° BER BER 10×1 4.05×10-5 3.13×10-7 4.02×10-5 6.52×10-3 0.256 5×4 7.98×10-2 1.25×10-6 9.97×10-5 2.61×10-2 0.425 2.5×16 0.531 5.00×10-6 3.38×10-4 0.104 0.481 2×25 0.667 7.82×10-6 5.16×10-4 0.163 0.488
Table 4. BER of telescopes in series connection
View tableView in ArticleTable 4. BER of telescopes in series connection
D（m）×n Night SEP=3° BER BER 10×1 4.05×10-7 3.13×10-7 4.02×10-5 6.52×10-3 0.256 5×4 0.283 9.57×10-27 0.502 1.81×10-9 0.142 2.5×16 0.999 8.37×10-105 0.502 1.07×10-35 0.502 2×25 1.000 2.40×10-163 0.502 2.27×10-55 0.502
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Xiaoliang LI, Rongke LIU, Jianjun WANG, Xiangnan LIU. Deep-space laser communications telescope array based on single photon detector[J]. Optics and Precision Engineering, 2022, 30(13): 1534
Paper Information
Category: Modern Applied Optics
Received: Jan. 5, 2022
Accepted: --
Published Online: Jul. 27, 2022
The Author Email: LIU Rongke (rongke_liu@buaa.edu.cn)
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