{"title":"Low-power-consumption coherent receiver architecture for satellite optical links","authors":"A.W. Bernini, M. Fice, K. Balakier","doi":"10.1109/icsos53063.2022.9749703","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749703","url":null,"abstract":"As the demand for satellite data transmission increases, higher capacity optical links need to be developed to allow satellites to be connected directly to ground stations (GST). The advantages of Low Earth Orbit (LEO) direct-to-Earth links are smaller latency when compared to relay systems using Geostationary Orbit (GEO) satellites, i.e. LEO-to-GEO and GEO-to-GST, and an increased available bandwidth offered by the optical spectrum with respect to radio frequency (RF) which allows for much higher link capacity. The increase in data rate of optical satellite to ground links towards 100 Gbps will require implementing optical coherent transceivers with capability to compensate for Doppler shift and atmospheric channel impairments. An important figure of merit which needs to be carefully considered in a satellite system is the equipment power consumption. The power consumption of coherent receivers used for terrestrial applications is closely related to the bit rate, with a receiver back-end digital signal processing being responsible for the vast majority of the power consumed. In this paper we propose a hybrid approach to signal processing consisting of simplified digital and analogue elements allowing for significant power reduction. Moreover, one of the attractive aspects of the proposed approach is that it does not require an increased complexity for an increase in baud rate. It will be discussed that the analogue approach to the frequency and phase recovery would allow a saving of approximately 40% to 50% of power on the overall DSP block at baud rates between 10 Gbaud and 100 Gbaud.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114945012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Matsuda, Hayato Sano, Yukari Takada, M. Binkai, Shota Koshikawa, Y. Yokomura, Tsuyoshi Yoshida, Y. Konishi, N. Suzuki
{"title":"Multi-aperture Transmission and DSP Techniques for Beyond-10 Tb/s FSO Networks","authors":"K. Matsuda, Hayato Sano, Yukari Takada, M. Binkai, Shota Koshikawa, Y. Yokomura, Tsuyoshi Yoshida, Y. Konishi, N. Suzuki","doi":"10.1109/icsos53063.2022.9749745","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749745","url":null,"abstract":"We present a real-time demonstration of 14 Tb/s transmission in 220 m outdoor FSO experiments with a 9-aperture transmit and single-aperture receive FSO system. In addition, we propose virtual optical channel DSP with symbol synchronization with digital filtering which efficiently accommodates the signals of multiple users.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131954318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Maho, V. Billault, J. Bourderionnet, L. Leviandier, P. Feneyrou, A. Brignon, M. Sotom
{"title":"Robust atmospheric FSO communication receiver based on the coherent combination of spatial modes: an experimental evaluation","authors":"A. Maho, V. Billault, J. Bourderionnet, L. Leviandier, P. Feneyrou, A. Brignon, M. Sotom","doi":"10.1109/icsos53063.2022.9749704","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749704","url":null,"abstract":"The experimental assessment of a novel all-optical FSO communication receive device based on a spatial mode demultiplexer and a photonic integrated coherent combiner, is reported. The device collects light from the spatial modes coupled into the input multimode fiber and coherently recombines these modes into an output single-mode fiber via a binary-tree integrated photonic circuit. It was evaluated in FSO transmission laboratory experiments featuring an atmospheric propagation channel emulator. The BER performance of a pre-amplified, OOK direct-detection receiver were measured at 10 Gbps, under various disturbance conditions and strengths. Efficient coupling into the receiver input was shown to be maintained resulting in almost constant BER. Low BER floors and limited detection sensitivity penalties were observed. The feasibility of the proposed FSO receiver is proven, together with its ability to provide higher collection efficiency and greater robustness to phase and intensity disturbances than standard SMF receivers.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133900898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bit Error Rate Performance of a Laser Ground-to-Satellite Uplink Communications Systems in the Presence of Atmospheric Turbulence and Loss","authors":"L. Stotts, L. Andrews","doi":"10.1109/icsos53063.2022.9749698","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749698","url":null,"abstract":"The Bit Error Rate (BER) performance of a ground-to-space laser uplink communications systems subject to atmospheric turbulence and loss is analyzed. Beam wander-induced effects like scintillation and receiver noise variance have a greater effects on communications system performance than has previously been assessed. A new model for the signal-to-noise ratio is presented that includes atmospheric loss, intensity fluctuations, beam wander, and intensity noise variance. This model easily can be modified to other communications systems, e.g., Differential Phase Shift Key. The scintillation index and the BER hence readily evaluated with Forward Error Coding (FEC) to compensate for atmospheric turbulence effects. Specifically, comparisons in 10–12 BER performance for 10 Gigabit per second, Non-Return to Zero On-Off Key, Erbium-Doped-Fiber Amplifier communications systems as a function of link zenith angle are given for the Hufnagle-Valley 5/7 and Hufnagle-Andrews-Phillips refractive index structure parameter models under two specifics benchmarks. These models were evaluated using a round-earth model. These models essentially are commensurate with the multiplicative version of the Hufnagel-Valley 5/7 model, which appears to the more realistic way of model comparison. Results show that in this last situation, BER performance has an asymptotic limit for high zenith angles. The conclusion is that other means in addition to a FEC are needed to achieve a 10–12 BER for high zenith angle. Example is given that shows an approach for augmenting a FEC in mitigating turbulence","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133734164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Christopher Vasko, Pantelis-Daniel M. Arapoglou, G. Acar, Monica Politano, Wael El-Dali, J. P. Armengol, H. Hauschildt, C. Elia
{"title":"Optical High-Speed Data Network in Space - An Update on HydRON's System Concept","authors":"Christopher Vasko, Pantelis-Daniel M. Arapoglou, G. Acar, Monica Politano, Wael El-Dali, J. P. Armengol, H. Hauschildt, C. Elia","doi":"10.1109/icsos53063.2022.9749744","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749744","url":null,"abstract":"The High thRoughput Optical Network (HydRON) vision of the European Space Agency (ESA) is to seamlessly extend terrestrial high-capacity networks into space. The paper presents an update following the successful conclusion of internal assessments addressing various mission-and first system implementation aspects, as well as the conclusion of external studies completed in 2021. It focuses on two main aspects: a) providing a high level overview of the HydRON system concept, with more detail offered on the payload architectural options and b) providing an overview of the HydRON trade-offs that drive the overall end-to-end system design and performances of the HydRON Mission.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133788064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Latest Status of the CCSDS Optical Communications Working Group","authors":"B. Edwards","doi":"10.1109/icsos53063.2022.9749734","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749734","url":null,"abstract":"International civil space agencies around the world are working together in the Interagency Operation Advisory Group (IOAG) and the Consultative Committee for Space Data Systems (CCSDS) to develop interoperability architectures and standards for space communications. Within CCSDS, there is a working group dedicated on developing recommendations and standards for optical communications. These standards include recommendations for the physical layer, coding and synchronization layer, and best practices for measuring and monitoring atmospheric conditions and operating optical links. The working group has developed standards for both Near Earth and deep space robotic and hum exploration missions. The standards generally address both free space links between spacecraft and free space links between spacecraft and ground. This paper will provide an overview and update on the set of standards the CCSDS Optical Communications Working Group has developed.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122820482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Atsushi Mamiya, Kentaro Tanaka, Saori Yokote, M. Sasaki, M. Fujiwara, Masaki Tanaka, H. Sato, Yusuke Katagiri
{"title":"Satellite-based QKD for Global Quantum Cryptographic Network Construction","authors":"Atsushi Mamiya, Kentaro Tanaka, Saori Yokote, M. Sasaki, M. Fujiwara, Masaki Tanaka, H. Sato, Yusuke Katagiri","doi":"10.1109/icsos53063.2022.9749727","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749727","url":null,"abstract":"Recently, Quantum Key Distribution (QKD) and Cryptographic Technology development are in progress all over the world. In Japan as well, a wide range of QKD study and development is being conducted, including public offerings of research and development from the Ministry of Internal Affairs and Communications (MIC). SKY Perfect JSAT Corporation (SJC), which has been engaged for more than 30 years in space industry, has been selected as the representative company of the consortium for executing the public offering from MIC in 2021, “Study and Development of Satellite-based QKD and Cryptographic Technology for Global Quantum Cryptographic Network Construction”, and plans to actively engage in research and development, especially for satellite-based QKD. The consortium to execute the project consists of National Institute of Information and Communications Technology (NICT), NEC Corporation, TOSHIBA CORPORATION and SJC, and they are actively engaged in many other projects related to QKD and Cryptographic Technology and have been contributing on Japanese QKD and Cryptographic Technology development.This paper introduces recent QKD development situation of several countries all over the world and of Japan. Then this paper describes the concepts and the requirements of MIC public offering, “Study and Development of Satellite-based QKD and Cryptographic Technology for Global Quantum Cryptographic Network Construction”, the role of the consortium to work on the project and their progress so far. In addition, this paper describes about the prospects for future business development of SJC, associated with satellite-based QKD.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132356572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BER Performance Improvement using Spatial Diversity Combining in an Atmospheric Turbulent Channel with Satellite Vibration-Induced Fading","authors":"Charleston Dale Ambatali, V. F. Nery, S. Nakasuka","doi":"10.1109/icsos53063.2022.9749706","DOIUrl":"https://doi.org/10.1109/icsos53063.2022.9749706","url":null,"abstract":"Atmospheric turbulence is a major impediment in the successful establishment of free space optical (FSO) communication from satellite to ground. To mitigate its effects, spatial diversity is considered as a solution wherein receivers are placed far enough such that atmospheric turbulence influence is uncorrelated between them. Most studies, however, treat the effect of atmospheric turbulence and internal satellite vibrations separately which might underestimate the expected beam fading. In the paper, we assess multiple diversity combining techniques in satellite-to-ground optical communications where both atmospheric turbulence and satellite-induced pointing errors are present. A model encompassing the influence of afore-mentioned error sources to the bit error rate (BER) is proposed. Furthermore, the performance is evaluated in different atmospheric turbulence conditions to examine the robustness of spatial diverse systems compared to the no diversity case.","PeriodicalId":237453,"journal":{"name":"2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127042165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}