Laser communication based on a multi-channel single-photon detector

Du, Bingcheng; Wang, Yong; Wu, E; Chen, Xiuliang; Wu, Guang

doi:10.1016/j.optcom.2018.05.039

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…The receiving systems of each telescope rely on adaptive optics to collect efficient light at the wavelength of the forward link to a single-mode waveguide, which is subsequently directed to the terrestrial modem and CODEC. Both OGS-1 and OGS-2 utilize the uplink channel (Du et al, 2018) to send a reference beam for the optical space terminal to adjust the pointing direction. The ground modem of the stations modulates the signal on the uplink direction and demodulates it on the downlink, however, while in OGS-1 both Pulse Position Modulation (PPM) and Differential Phase Shift Key (DPSK) modulation is enabled, OGS-2 only enables the latter.…”

Section: Space Laser Communications Systemmentioning

confidence: 99%

NASA Space Laser Communications System

Bielawski

Radomska

2020

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Bidirectional space communication is a fundamental prerequisite for maintaining contact with objects performing missions in space, whether manned and unmanned. Until recently, it relied solely on the propagation of electromagnetic waves (the radio) using frequency bands dedicated for objects outside the Earth's atmosphere. However, modern space technologies are subject to ongoing development as they are being fitted with advanced communication systems. Given the constant enhancement of our technological capabilities, the traditional radio-based communication shows a glaring inadequacy and contributes to the widening of a gap between this and the high technology of on-board devices installed on modern spacecraft. The technology that complies with the up-to-date requirements of space communication is optical space communication. It is expected to provide for high-speed data transfer and increase the bandwidth several times, while ensuring immunity to common cyber threats, including jamming, spoofing and meaconing. The deployment of laser-based optical communication will not only contribute to increasing the air and space operation safety levels, but also enable deep space exploration. To this end, NASA’s Laser Communications Relay Demonstration Project (LCRD) is currently undergoing development and testing. This chapter undertakes to characterise the emerging technology with respect to its operating principles, the future scope of applications and involvement in currently conducted experiments. The results from the analysis are presented in the form of scenarios outlining possible applications of laser communication.

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Section: Space Laser Communications Systemmentioning

confidence: 99%

NASA Space Laser Communications System

Bielawski

Radomska

2020

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“…The TRC system adopts the single-photon direct detection mode to simplify the design, reduce the load, and improve the sensitivity. In the system based on single-photon detection, the time comparison precision can reach the order of picoseconds [24,25] , the ranging uncertainty can reach the order of centimeters [26,27] , and the bit error rate (BER) of optical communication is in the order of 10 −3 to 10 −6 [28,29] . In this paper, a 1.05 km free-space link is constructed.…”

Section: Introductionmentioning

confidence: 99%

Portable system integrated with time comparison, ranging, and communication

et al. 2022

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We demonstrate a portable system integrated with time comparison, absolute distance ranging, and optical communication (TRC) to meet the requirements of space gravitational wave detection. A 1 km free-space asynchronous two-way optical link is performed. The TRC realizes optical communication with 7.7 × 10 −5 bit error rate with a Si avalanche photodiode singlephoton detector, while the signal intensity is 1.4 photons per pulse with the background noise of 3 × 10 4 counts per second. The distance measurement uncertainty is 48.3 mm, and time comparison precision is 162.4 ps. In this TRC system, a verticalcavity surface-emitting laser diode with a power of 9.1 μW is used, and the equivalent receiving aperture is 0.5 mm. The TRC provides a miniaturization solution for ultra-long distance inter-satellite communication, time comparison, and ranging for space gravitational wave detectors.

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