Optical feeder link program and first adaptive optics test results

Saathof, Rudolf; Breeje, Remco den; Klop, W.; Kuiper, Stefan; Doelman, Niek; Pettazzi, Federico; Vosteen, Amir; Wildschut, Justin; Lange, Dorus de; Moens, Thijs; Köster, Sandra; Gruber, Michael; Spierdijk, Hans; Kerkhof, Peter; Russchenberg, Tjeerd; Truyens, Niel; Crowcombe, Will; Human, Jet; Calvo, Ramon Mata; Poliak, Juraj; Barrios, Ricardo; Scalise, Sandro; Ferrario, Ivan

doi:10.1117/12.2287354

Cited by 5 publications

(5 citation statements)

References 7 publications

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“…When it comes to space-based terminals for high data-rates however, these solutions are either too inefficient and voluminous, do not provide sufficient stroke and/or accuracy, or are not space-qualified. To this end, the Netherlands Organisation for Applied Scientific Research (TNO) has developed a double-axis FSM 5 , targeted to comply with the challenging requirements stemming from the communication terminals under development within their optical communications program 6 . This paper shows a first fully functional and representative prototype of this novel FSM and presents the first dynamic tests results, thereby validating its dynamic performance in terms of bandwidth and jitter.…”

Section: Introductionmentioning

confidence: 99%

Performance validation of a high-bandwidth fine steering mirror for optical communications

Witvoet

Kuiper

Meskers

2019

International Conference on Space Optics — ICSO 2018

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This paper presents the first test results of a novel Fine Steering Mirror (FSM) for optical communication terminals. The FSM utilizes efficient variable reluctance actuators, tailored for the specific application, making it highly compact and power efficient. The test results demonstrate a high dynamical performance of >1.7kHz closed-loop bandwidth, and an optical angular range of more than ±2˚ in two axes. The actual optical angular jitter is less than 1.5 μrad. These numbers demonstrate that this FSM is highly suitable for the evolving field of inter-satellite laser communications.

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Section: Introductionmentioning

confidence: 99%

Performance validation of a high-bandwidth fine steering mirror for optical communications

Witvoet

Kuiper

Meskers

2019

International Conference on Space Optics — ICSO 2018

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“…These disturbances generally originate from various vibration sources on the satellite platform. And for ground based terminals, atmospheric turbulence need to be corrected [10]. The key requirements and functions of the FSM are:…”

Section: Fsm Functionmentioning

confidence: 99%

Optical satellite communication space terminal technology at TNO

Saathof

Crowcombe

Kuiper

et al. 2019

International Conference on Space Optics — ICSO 2018

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Optical communications will complement radio frequency (RF) communications in the coming decades to enhance throughput, power efficiency and link security of satellite communication links. To enable optical communications technology for intersatellite links and (bi-directional) ground to satellite links, TNO develops a suite of technologies in collaboration with industry, which comprises of terminals with different aperture sizes, coarse pointing assemblies and fast steering mirrors. This paper presents the current state of the development of TNO technology for optical space communications. It mainly focuses on the development of an optical head with an entrance aperture of 70 mm, an optical bench for CubeSats and coarse pointing assemblies (CPAs). By continuing these steps, world wide web based on satellite communications will come closer.

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“…The irradiance at the STB will give the main input of the validity and usefulness of the reciprocity principle. Figure 2 shows the OFELIA GTB is equipped with a fast steering mirror (FSM) and a tip tilt sensor (TTS) to correct for tip-tilt aberrations [3]. The deformable mirror (DM) and the wave front sensor (WFS) corrects the high order wave front aberrations.…”

Section: Test Descriptionmentioning

confidence: 99%

“…Achievable data rates for satellite communications based on radio frequencies (RF) will very soon reach its limits, due to the limited availability of the RF spectrum [1]. In order to overcome this limit for bi-directional links between ground stations and very high throughput satellites at geostationary orbits, TNO and DLR envision optical free-space communication [2], [3]. Currently, an optical ground terminal (OGT) is being designed by TNO for terabit/s optical feeder links, with a physical layer for the communications system, which is developed by DLR.…”

Section: Introductionmentioning

confidence: 99%

Adaptive optics pre-correction for optical feeder links: breadboard performance

Saathof

Breeje²,

Klop³

et al. 2019

International Conference on Space Optics — ICSO 2018

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For the next generation of very high throughput communication satellites, TNO and DLR envision optical free-space communication between ground stations and geostationary telecommunication satellites to replace the traditional RF links. To mitigate atmospheric turbulence, an Adaptive Optics (AO) system will be used to apply uplink pre-correction. OFELIA, an ground terminal breadboard was developed to demonstrate the pre-correction principle over an realistic link. Currently, integration tests have been performed to verify the AO performance. Also a laser link experiment over 10 km distance has already been established, in a scenario relevant to ground-to-satellite links. The paper shows that AO is clearly beneficial for the downlink performance. In addition the first preliminary experimental results of the pre-correction show it is also beneficial for the uplink.

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Optical feeder link program and first adaptive optics test results

Cited by 5 publications

References 7 publications

Performance validation of a high-bandwidth fine steering mirror for optical communications

Performance validation of a high-bandwidth fine steering mirror for optical communications

Optical satellite communication space terminal technology at TNO

Adaptive optics pre-correction for optical feeder links: breadboard performance

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