Journal ArticleDOI
Effect of Ocean Surface on Laser Communication Link from Ground to Submarine
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In this paper, it was shown that as long as the diameter of the optical beam incident on the interface is comparable to the ocean wavelength, the attenuation of the received underwater optical intensity is never more than 50 per cent of what it would have been without ocean waves.Abstract:
Normal communication link with submerged bodies in the VLF range has serious practical limitations besides providing limited bandwidth capabilities. The optical communication links are thus being studied as an alternative possibility. It is now known that a window exists in the blue/green region of the optical spectrum, where the ocean water attenuation factors are very low. The ground-submarine link via a satellite has to necessarily contend with propagation through the atmosphere, ocean and air-water interface. The vagaries of the air-water interface on the reliability of the optical communication link have been studied both theoretically and experimentally and the results presented. It is observed that as long as the diameter of the optical beam incident on the interface is comparable to the ocean wavelength, the attenuation of the received underwater optical intensity is never more than 50 per cent of what it would have been without ocean waves.read more
References
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Journal ArticleDOI
The Role of Blue/Green Laser Systems in Strategic Submarine Communications
T. Wiener,S. Karp +1 more
TL;DR: Some of the operational motivations for a strategic laser communication system operating between an orbiting satellite and a submerged submarine together with a generic system design are discussed.
Journal ArticleDOI
Devices: Visible and UV lasers: Problems and promises: New families of gas lasers are expected to deliver a range of pulse intensities, durations, and wavelengths for diverse applications
TL;DR: New families of gas lasers are expected to deliver a range of pulse intensities, durations, and wavelengths for diverse applications as mentioned in this paper, but their performance has not yet been evaluated.
Journal ArticleDOI
Time-Average Power-Density Probability Distribution Below the Ocean Surface of a Beam of Collimated Optical Radiation Incident on the Surface*
TL;DR: In this paper, the time-average power density probability distribution below the ocean surface of a circular beam of collimated optical radiation incident on the surface is developed as a function of angle of incidence, beam diameter, and wind velocity and direction by means of geometrical optics.
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