Qualifying an integrated coherent receiver for space applications

Foy, Christopher; Minch, J.; Feld, D. A.; Bourque, Rebecca; Weidman, D.J.; Boning, Margaret; Yarnall, Timothy M.

doi:10.1117/12.2612842

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…It is concluded that our high-sensitivity receiver utilizes of narrow linewidth laser diode [22], which keep high temperature stability in thermal test and achieve radiation tolerance in radiation test. Moreover, integrated intradyne coherent receiver which implements 90 degrees optical hybrid and balanced photo detectors has already been demonstrated for space environmental test on the ground [23]. Commercial Off-The Shelf (COTS)-based FPGA is also applied as a high-speed electronics device for DSP circuit [24] and will be demonstrated on orbit [25].…”

Section: Current Status Of Research Work In Nictmentioning

confidence: 99%

Research and development of key technologies for cislunar optical communication systems in Japan

Kotake

Saito

Araki

et al. 2023

Free-Space Laser Communications XXXV

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JAXA and NICT have started the collaborative research for cislunar optical communications. NICT is responsible for research and development some of key technologies for cislunar optical communication systems utilizing GEO relay satellite. NICT has especially focused on research and development of a large-aperture optical antenna, high-sensitivity optical communication system applying adaptive optics and HDR method, which is based on binary phase shift keying scheme, onboard the GEO relay satellite. In this paper, we will present the overview of collaborative research and key technologies for cislunar optical communication systems. We will also describe the current status of our research and development activities.

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Section: Current Status Of Research Work In Nictmentioning

confidence: 99%

Research and development of key technologies for cislunar optical communication systems in Japan

Kotake

Saito

Araki

et al. 2023

Free-Space Laser Communications XXXV

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“…The high-sensitivity optical receiver, which utilizes digital coherent scheme, is generally composed of narrow linewidth laser diode (LD), coherent receiver and digital signal processing (DSP) circuit. In the reference [14], no variation of narrow linewidth LD's performance was confirmed in thermal and radiation test, and space-grade reliability of coherent receiver was verified in space environmental test [15]. Radiation tolerance of commercial Off-The Shelf (COTS)-based FPGA, which is implemented in the DSP circuit, was also confirmed in radiation test [16].…”

Section: Design Of High-sensitivity Optical Receivermentioning

confidence: 99%

Preliminary design of key optical components onboard laser communication terminal of GEO data relay satellite for cislunar optical communication system

Kotake,

Saito,

Araki

et al. 2024

Free-Space Laser Communications XXXVI

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JAXA and NICT have jointly started the research work for cislunar optical communications. Our research work aims at 2.5 Gbit/s high-speed optical communication from the Moon to the Earth. We have proposed deep space optical link configuration applying Geostationary Earth Orbit (GEO) data relay satellite and High Data Rate (HDR) method. We have conducted preliminary design of key optical components onboard laser communication terminal (LCT) of the GEO data relay satellite. This paper describes design of large-aperture optical antenna and high-sensitivity optical communication system, which implements adaptive optics (AO) module and high-sensitivity optical receiver applying digital coherent scheme.

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“…Alternatively, both polarizations can be detected, and signal processing can be used to recover all of the signal into a single polarization. 18 The bandwidth of the receiver and real-time digital oscilloscope should be greater than 10 times the modulation rate and the LO frequency offset should be at least ten times the laser linewidth. Such waveforms combined with analysis based on a "golden" software receiver have been shown to be an effective tool for characterization of transmitted waveform implementation penalty.…”

Section: Extinction Ratio Measurement Overview and Theorymentioning

confidence: 99%

Measurement of extinction ratio for burst waveform transmitters using a coherent receiver and hybrid time and frequency domain analysis

Minch,

Sun,

Sellar

2024

Free-Space Laser Communications XXXVI

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For free-space optical communication links where platform size, weight, and power (SWaP) tend to be at a premium, it is important to design transmitters and receivers that can operate as close as possible to the theoretical best performance. For variable duty-cycle, multi-rate optical communication systems, as demonstrated in the NASA LCRD program, finite extinction ratio can become a significant contributor to transmitter implementation loss when the duty cycle becomes low. The ability to measure waveform extinction ratio of a transmitter with high-fidelity is important for the optimization of these transmitter designs. We present a new technique to measure the extinction ratio of a variable duty-cycle transmitter using an intradyne coherent receiver to capture the full electric field of the transmitter. Average power within a burst of data and within the dead-time of the waveform are separately calculated by gating in the time domain and then by filtering in the frequency domain. Our results show that extinction ratios as high as 45 dB can be accurately measured using this technique. We discuss how to choose the optimal bandwidth for integrating power in the frequency domain. Finally, we show the effects of signal-to-noise ratio on the fidelity of the extinction ratio measurement.

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Qualifying an integrated coherent receiver for space applications

Cited by 4 publications

References 9 publications

Research and development of key technologies for cislunar optical communication systems in Japan

Research and development of key technologies for cislunar optical communication systems in Japan

Preliminary design of key optical components onboard laser communication terminal of GEO data relay satellite for cislunar optical communication system

Measurement of extinction ratio for burst waveform transmitters using a coherent receiver and hybrid time and frequency domain analysis

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