Terabit FSO communication based on a soliton microcomb

Shao, Wang; Wang, Yang; Jia, Shuaiwei; Xie, Zhuang; Gao, Duorui; Wang, Wei; zhang, dongquan; Liao, Peixuan; Little, Brent E.; Chu, Sai T.; Zhao, Wei; Zhang, Wenfu; Wang, Weiqiang; Xie, Xiaoping

doi:10.1364/prj.473559

Cited by 13 publications

(7 citation statements)

References 33 publications

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“…-50 dB [19,21] . 当分别使用光学频率梳梳齿和与其光学性质相近的单频激光作为载波光源进行通信实验时, 前者不会比后者展示出明显更大的光信噪比损耗 [13] , 在发射端输出信号光差矢量幅度(EVM) [22] 反映测量符号与理想符号之间的误差水平, 参考TS38.141规范 [23] , 16 QAM…”

Section: 实验原理unclassified

High-speed data transmission based on mode-locked optical frequency comb

Liu,

Mei,

Wang

et al. 2024

Acta Phys. Sin.

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With the rapid development of emerging technologies such as multimedia services, live broadcasting, video conferencing, and high-definition television, traditional radio frequency communication has been unable to meet people's growing demand for communication capacity and transmission rate. In recent years, optical communication has received extensive attention from the industrial and scientific communities due to its advantages of large bandwidth, high speed, low power consumption, light weight and strong anti-interference ability. As an emerging light source, the optical frequency comb (OFC) has a wide spectral range, multi-wavelength, high stability and good phase coherence, which provides a new idea for the study of microwave signals with simple system structure, strong tunability and high frequency stability. At the same time, the multi-optical mode characteristics of OFC are compatible with the current communication system based on wavelength division multiplexing technology. Hundreds of laser arrays in traditional communication systems can be replaced by only one laser, which greatly reduces the power consumption of the system.<br>Combining the above advantages, in this paper, a large-scale parallel high-speed optical communication system based on mode-locked OFC has been proposed. The linewidth of the OFC locked to the rubidium atomic clock can reach the order of Hz, which is sufficient to support the transmission of high-order modulation signals. The electro-optic modulators are used to adjust the amplitude and phase of each optical mode of the mode-locked OFC and self-coherently map to the RF domain. The high-speed high-order modulation signal with coded information is obtained by frequency screening through a narrow-band filter. The communication capability of the microwave photonic modulation signal in the 16QAM format is verified by simulation. The 16QAM communication with the rate of 2 Gbit / s, 6 Gbit / s and 14 Gbit / s is realized by using the photonic microwave signal on the 100 m space optical link, and the bit error rate (BER) is lower than 10-6. The proposed large-scale parallel optical communication system based on mode-locked OFC can achieve high-speed information transmission with a compact system structure, which is suitable for inter-satellite communication, emergency communication, military communication and other fields.

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Section: 实验原理unclassified

High-speed data transmission based on mode-locked optical frequency comb

Liu,

Mei,

Wang

et al. 2024

Acta Phys. Sin.

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“…Compatibility with optical fiber technologies in the design of FSOC terminals will enable the use of current fiber-optic technologies to improve the performance of the system. Such is the case of fiber amplifiers to amplify both transmitting 6 and receiving 7 , 8 signals.…”

Section: System Overviewmentioning

confidence: 99%

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Badás,

Piron,

Bouwmeester

et al. 2023

Opt. Eng.

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Growing interest in free-space optical communication, due to the high bandwidth and security provided by these links, has generated the necessity of designing high-performance satellite terminals. In order to develop these terminals, the optothermo-mechanical phenomena that appear in the space environment and their effect on optical communication links have to be understood in detail. A review of the opto-thermo-mechanical phenomena occurring in spaceborne terminals is presented, describing the relevance of each of them. The methods found to compute the impact on the communication performance due to opto-thermo-mechanical phenomena are collected by building the bridge between the optical and communication performance parameters. Finally, techniques available to mitigate the detrimental effects of these phenomena are classified, and the relevant research challenges are identified.

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“…Due to atmospheric turbulence brought on by temperature, humidity, and other factors, a wireless optical signal sent over the atmosphere would have undesirable consequences such as beam expansion, beam drift, light-intensity flicker, and more [2]. The optical signal will be distorted by the background noise that solar radiation produces [3,4]. Due to the turbulence effect and background radiation noise, the received signal has a high bit error rate [5], and the FSO communication system's performance is below optimal [6].…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Atmospheric Channel Reciprocity-Based Adaptive Power Transmission

Liu,

Chen,

Liu

et al. 2023

Photonics

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In atmosphere free-space optical communication (FSO) systems, the scintillation effect produced by turbulence effects increases the bit error rate (BER) of the communication system and reduces the system’s performance. However, a high correlation of turbulent noise occurs in the two transmission channels when a signal transmitted in the bidirectional atmospheric channel with channel reciprocity. The performance of the FSO system can be increased by extracting channel state information (CSI) in forward transmission and using adaptive power technology to reduce turbulence in inverse transmission. In this research, we propose a bidirectional atmospheric channel reciprocity-based adaptive power transmission (CR-APT) technique that lowers the bit error rate of the transmitted signal by using the CSI of the relevant channel. To verify the effectiveness of the technique, a bidirectional atmospheric channel with various turbulence intensities is built in the simulation program, along with various background sounds to vary the channel reciprocity, and the impact of reciprocity on signal transmission is examined. The simulation findings demonstrate that adaptive power transmission with high reciprocity is excellent under the weak turbulence condition, and its future development is promising.

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Terabit FSO communication based on a soliton microcomb

Cited by 13 publications

References 33 publications

High-speed data transmission based on mode-locked optical frequency comb

High-speed data transmission based on mode-locked optical frequency comb

Opto-thermo-mechanical phenomena in satellite free-space optical communications: survey and challenges

Bidirectional Atmospheric Channel Reciprocity-Based Adaptive Power Transmission

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