Overview of the inter-orbit and the orbit-to-ground laser communication demonstration by OICETS

The experimental results of an inter-orbit laser communication performed under an atmospheric influence is presented. The demonstration was planned so that the optical link was supposed to graze the earth's rim because of the satellite revolution around the earth. The trial was successfully carried out on 5th April, 2006. The measured experimental data are introduced to show the temporal behavior of the OICETS's optical terminal. The atmospheric influence on the optical link is calculated with a theoretical model to obtain a probability density of normalized intensity as a predictive value. The probability density is also estimated from the experimentally measured data. The comparison shows that the theoretical prediction well describes the experimental results.

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“…During this period of 8 months the laser link was established successfully up to 100 times. [1][2][3] .…”

Section: Introductionmentioning

confidence: 98%

Observation of atmospheric influence on OICETS inter-orbit laser communication demonstrations

et al. 2007

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“…Optical link services are performed by ARTEMIS each day, as a routine operation, with link distances in the order of 40'000 km and data rates of 50 Mbps. Recently the Japanese OICETS satellite has achieved an optical communications link with the ARTEMIS satellite [3]. Following on from the success of SILEX and OICETS a number of applications using this technology have been investigated.…”

Section: Introductionmentioning

confidence: 99%

OPTEL terminal for deep space telemetry links

et al. 2007

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Oerlikon Space AG is currently developing the OPTEL family of optical terminals for free-space optical communications. The optical terminals within the OPTEL family have been designed for future opportunities open to this technology. These opportunities range from commercial optical satellite crosslinks between geostationary (GEO) satellites, deep space optical links between planetary probes and the Earth, as well as optical links between airborne platforms (either between the airborne platforms or between a platform and satellite). The OPTEL terminal for deep space applications has been designed as an integrated RF-optical terminal for telemetry links between the science probe and Earth. The integrated architecture provides increased TM link capacities through the use of an optical link, while spacecraft navigation and telecommand are ensured by the classical RF link. The optical TM link employs pulsed laser communications to achieve robustness on the link to atmospheric degradation at the optical ground station. This paper will present an overview of the system architectures that the Oerlikon Space family of OPTEL terminals have been designed to support and will focus on the design of the deep space optical communications terminal.

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“…2 Since that time, a series of duplex optical link experiments between GEO/LEO satellites and OGS have been verified. [3][4][5][6][7][8][9] The homodyne binary phase-shift-keying (BPSK) systems can achieve the best receiver sensitivity and the longest transmission distance among all optical communication systems. 10 In 2008, an optical intersatellite communication link based on the homodyne BPSK transmitted data with a bidirectional data rate of 5.625 Gbps with a bit-error-rate (BER) better than 10 −9 between two LEO satellites.…”

Section: Introductionmentioning

confidence: 99%

2.5- and 5-Gbps time-delay self-homodyne interference differential phase-shift keying optical receiver for space-to-ground communication link

et al. 2019

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The availability and reliability of the high data rate space-to-ground optical coherent communication links are critically challenged because the wave front of the signal beam is distorted and impaired when propagating through atmospheric turbulence. Based on the free-space interference of two successive data bits delayed by an unequal-arm-length Mach-Zehnder interferometer (MZI), a pupil-matching time-delay self-homodyne interference differential phase-shift keying (DPSK) optical receiver with 2 × 4 90-deg optical hybrid is designed for the high data rate space-to-ground optical communication links due to its immunity from wave front impairment. The delayed optical path difference (OPD) in the unequal-arm-length MZI corresponds to the duration of one bit and can be stabilized to below 1000th of the wavelength by the closed-loop feedback control. The maximum system insertion loss is <1 dB. The measurement accuracy of OPD in unequal-armlength MZI is 0.01 mm by the deramping method from a chirped laser. The double-bit-rate 2.5-∕5-Gbps DPSK optical receiver has been presented. Parallel and separate atmospheric measurement along the optical communication link is also performed simultaneously. The 2.5-and 5-Gbps optical communication links have already been verified with a ϕ300-mm receiving telescope between two buildings in downtown over a distance of 2.4 km in the worst-case atmospheric conditions. The measured bit-error-rate is better than 10 −6 . Without wave front compensation of the adaptive optics, local oscillator, and optical phase-locked loops, the pupil-matching time-delay self-homodyne interference DPSK optical receiver has great significance for future developments of space-to-ground optical communication links.

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Overview of the inter-orbit and the orbit-to-ground laser communication demonstration by OICETS

Cited by 61 publications

References 8 publications

Observation of atmospheric influence on OICETS inter-orbit laser communication demonstrations

Observation of atmospheric influence on OICETS inter-orbit laser communication demonstrations

OPTEL terminal for deep space telemetry links

2.5- and 5-Gbps time-delay self-homodyne interference differential phase-shift keying optical receiver for space-to-ground communication link

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