Variable, two-color acquisition beam for free-space laser communication terminals

Roth, Jeffrey M.; Ramakrishnan, Shankararaman; Murphy, Robert J.; Volpicell, Alicia M.; Rauch, Stephen; Andrle, Michael S.; King, Alex J.; Reynolds, Brett; Taylor, John A.; Parenti, Ronald R.; Chang, John; Ulmer, Todd G.

doi:10.1117/12.2513964

Cited by 1 publication

(7 citation statements)

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Section: Using Optical Wedge Pairmentioning

confidence: 99%

“…Conversely, if the wedge angle is increased, astigmatism will be introduced, causing the outgoing beam to become oval. [58,68]. Reprinted/adapted with permission from Ref.…”

Section: Using Optical Wedge Pairmentioning

confidence: 99%

“…Building upon this mechanism, J.M. Roth et al [68] designed and manufactured a FSO communication system with continuously adjustable beam divergence angle and optical power, also shown in Figure 20. To minimize the terminal SWaP, the beacon and signal beams (at different wavelengths) were amplified by the same HPOA, and the relative power level of each beam was dynamically controlled using an electronically controlled variable optical attenuator (VOA).…”

Section: Using Optical Wedge Pairmentioning

confidence: 99%

“…To minimize the terminal SWaP, the beacon and signal beams (at different wavelengths) were amplified by the same HPOA, and the relative power level of each beam was dynamically controlled using an electronically controlled variable optical attenuator (VOA). Optical path diagram of FSO communication system with continuously adjustable beam divergence angle and optical power [58,68]. Reprinted/adapted with permission from Ref.…”

Section: Using Optical Wedge Pairmentioning

confidence: 99%

“…Furthermore, we have presented Table 3, which summarizes the current studies that have applied VBDA technology to different link types, such as ground terminal platforms, air platforms, high-speed train (HST) platforms, underwater platforms, and satellite platforms. It is worth noting that each VBDA method described in this paper has its unique characteristics, and designers should choose the appropriate technique for the given FSO [58,68]. Reprinted/adapted with permission from Ref.…”

Section: Using Optical Wedge Pairmentioning

confidence: 99%

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A Review of Variable-Beam Divergence Angle FSO Communication Systems

Zhang

et al. 2023

Photonics

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Free-space optical (FSO) communication is widely used in satellites, ships, aircraft, and ground stations due to its advantages of high speed, large capacity, good confidentiality, and strong anti-interference ability. Variable-beam divergence angle (VBDA) technology makes FSO systems more flexible; this has the benefits of higher acquisition probability, stronger tracking ability, wider communication link range, and lower energy consumption. In other words, the study of VBDA has both theoretical significance and practical relevance. This paper conducts a comprehensive search of relevant scientific databases, journals, conference proceedings, patents, and books to identify publications related to VBDA technology. We analyze these publications, classify and organize various VBDA techniques based on their respective methods. To the best of our knowledge, this is the first review of VBDA technology. In this paper, we first explain the basic principle of changing the beam divergence angle by employing the ABCD matrix, and further furnish a detailed overview of the methods used for VBDA along with their corresponding advantages and disadvantages. In addition, we provide a comprehensive summary of the research conducted using VBDA technology across different link types. Lastly, we identify the challenges and potential future research directions for VBDA technology.

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Section: Using Optical Wedge Pairmentioning

confidence: 99%

“…Conversely, if the wedge angle is increased, astigmatism will be introduced, causing the outgoing beam to become oval. [58,68]. Reprinted/adapted with permission from Ref.…”

Section: Using Optical Wedge Pairmentioning

confidence: 99%

Section: Using Optical Wedge Pairmentioning

confidence: 99%

Section: Using Optical Wedge Pairmentioning

confidence: 99%

Section: Using Optical Wedge Pairmentioning

confidence: 99%

See 3 more Smart Citations