Transmission and pump laser modules for space applications

MacDougall, J.; Henderson, Philip; Naylor, P.; Elder, J.; Norman, Adrian; Turner, I.; Stampoulidis, L.; Kehayas, E.

doi:10.1117/12.2252150

Cited by 2 publications

(3 citation statements)

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“…These studies first reveal the high sensitivity of commercial RE-doped optical fibers at both pump and signal wavelengths. This excess of losses clearly limits their use as lasers or amplifiers, but their high radiation sensitivity could be exploited for dosimetry applications [151].…”

Section: Rare-earth-doped Fibers Edfa and Edfsmentioning

confidence: 99%

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Recent advances in radiation-hardened fiber-based technologies for space applications

Girard

Morana

Ladaci

et al. 2018

J. Opt.

199

108

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In this topical review, the recent progress on radiation-hardened fiber-based technologies is detailed, focusing on examples for space applications. In the first part of the review, we introduce the operational principles of the various fiber-based technologies considered for use in radiation environments: passive optical fibers for data links, diagnostics, active optical fibers for amplifiers and laser sources as well as the different classes of point and distributed fiber sensors: gyroscopes, Bragg gratings, Rayleigh, Raman or Brillouin-based distributed sensors. Second, we describe the state of the art regarding our knowledge of radiation effects on the performance of these devices, from the microscopic effects observed in the amorphous silica glass used to design fiber cores and cladding, to the macroscopic response of fiber-based devices and systems. Third, we present the recent advances regarding the hardening (improvement of the radiation tolerance) of these technologies acting on the material, device or system levels. From the review, the potential of fiber-based technologies for operation in radiation environments is demonstrated and the future challenges to be overcome in the coming years are presented.

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Section: Rare-earth-doped Fibers Edfa and Edfsmentioning

confidence: 99%

“…Figure 9 illustrates the scheme of a high-power laser transmitter for space communication [148][149][150]. The seed laser is a high-power 1.55 μm distributed feedback laser (DFB) operating in the continuous wave (CW) regime [151]. Pulses can be generated using an external intensity modulator (INT mod) with a high extinction ratio.…”

mentioning

confidence: 99%

Recent advances in radiation-hardened fiber-based technologies for space applications

Girard

Morana

Ladaci

et al. 2018

J. Opt.

199

108

View full text Add to dashboard Cite

show abstract

“…The unit is built with space grade electronic parts assembled on a printed circuit board (PCB) which complies with ECSS-level standards for the procurement and fabrication of hi-rel space-grade electronic assemblies. The pump lasers are hermetic devices, they are manufactured in-house, they comply with TELCORDIA GR-468 and MIL standards, they exhibit a small form factor and wide temperature range and have sufficient space evaluation heritage to be characterized as suitable for flight hardware integration [1]. Before their system assembly, the opto-electronic parts are screened as per ESCC Basic Specification No.…”

Section: Introductionmentioning

confidence: 99%

Functional, mechanical and thermal vacuum qualification testing of G&H proto-flight erbium doped fiber amplifier

Kehayas

Edmunds

Palmer

et al. 2019

International Conference on Space Optics — ICSO 2018

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We present the development and qualification testing of G&H multi-channel fiber amplifier unit developed for satellite to ground free space laser communications. The qualification results show robust functional and structural performance following stress at all 3 possible excitation axes with high level sine vibration, random vibration and mechanical shock as well as thermal cycling between survival and operating temperatures in vacuum condition.Keywords: free space laser communications, satellite to ground optical downlink, erbium doped fiber amplifier

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Transmission and pump laser modules for space applications

Cited by 2 publications

References 0 publications

Recent advances in radiation-hardened fiber-based technologies for space applications

Recent advances in radiation-hardened fiber-based technologies for space applications

Functional, mechanical and thermal vacuum qualification testing of G&H proto-flight erbium doped fiber amplifier

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