Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors

Ee Lee; Zabih Ghassemlooy; Wai Pang Ng; Mohammad Ali Khalighi; Murat Uysal

doi:10.1109/NOC-OCI.2013.6582900

Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors

Ee Lee, Zabih Ghassemlooy, Wai Pang Ng, Mohammad Ali Khalighi, Murat Uysal

Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we investigate the joint effects of beam width and the spatial coherence length in a partially coherent free-space optical (FSO) link from the information theory perspective, taking into account the combined influence of atmospheric turbulence and pointing errors. In addition, the effects of aperture-averaging on the average capacity of FSO links employing partially coherent beams (PCBs) are examined. Results show that PCBs are desirable in the weak-to-moderate turbulence regime, whereas highly coherent laser sources are preferred under strong fluctuations conditions; and there exist optimality in the optical beam parameters for different atmospheric channel conditions. Near-optimal average capacity is best achieved through the introduction of a larger receiver aperture and the joint beam width and spatial coherence length optimization technique, which effectively mitigates the effects of scintillation and pointing errors.

Original language	English (US)
Title of host publication	Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013
Pages	281-286
Number of pages	6
DOIs	https://doi.org/10.1109/NOC-OCI.2013.6582900
State	Published - 2013
Event	2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013 - Graz, Austria Duration: Jul 10 2013 → Jul 12 2013

Publication series

Name	Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013

Conference

Conference	2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013
Country/Territory	Austria
City	Graz
Period	7/10/13 → 7/12/13

Keywords

Free-space optical (FSO) communications
atmospheric turbulence
average channel capacity
partially coherent beam (PCB)
pointing errors

ASJC Scopus subject areas

Computer Networks and Communications

Access to Document

10.1109/NOC-OCI.2013.6582900

Cite this

Lee, E., Ghassemlooy, Z., Ng, W. P., Khalighi, M. A., & Uysal, M. (2013). Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors. In Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013 (pp. 281-286). Article 6582900 (Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013). https://doi.org/10.1109/NOC-OCI.2013.6582900

Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors. / Lee, Ee; Ghassemlooy, Zabih; Ng, Wai Pang et al.
Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013. 2013. p. 281-286 6582900 (Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, E, Ghassemlooy, Z, Ng, WP, Khalighi, MA & Uysal, M 2013, Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors. in Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013., 6582900, Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013, pp. 281-286, 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013, Graz, Austria, 7/10/13. https://doi.org/10.1109/NOC-OCI.2013.6582900

Lee E, Ghassemlooy Z, Ng WP, Khalighi MA, Uysal M. Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors. In Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013. 2013. p. 281-286. 6582900. (Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013). doi: 10.1109/NOC-OCI.2013.6582900

Lee, Ee ; Ghassemlooy, Zabih ; Ng, Wai Pang et al. / Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors. Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013. 2013. pp. 281-286 (Proceedings of the 2013 18th European Conference on Network and Optical Communications, NOC 2013 and 2013 8th Conference on Optical Cabling and Infrastructure, OC and I 2013).

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abstract = "In this paper, we investigate the joint effects of beam width and the spatial coherence length in a partially coherent free-space optical (FSO) link from the information theory perspective, taking into account the combined influence of atmospheric turbulence and pointing errors. In addition, the effects of aperture-averaging on the average capacity of FSO links employing partially coherent beams (PCBs) are examined. Results show that PCBs are desirable in the weak-to-moderate turbulence regime, whereas highly coherent laser sources are preferred under strong fluctuations conditions; and there exist optimality in the optical beam parameters for different atmospheric channel conditions. Near-optimal average capacity is best achieved through the introduction of a larger receiver aperture and the joint beam width and spatial coherence length optimization technique, which effectively mitigates the effects of scintillation and pointing errors.",

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AU - Lee, Ee

AU - Ghassemlooy, Zabih

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AU - Khalighi, Mohammad Ali

AU - Uysal, Murat

PY - 2013

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N2 - In this paper, we investigate the joint effects of beam width and the spatial coherence length in a partially coherent free-space optical (FSO) link from the information theory perspective, taking into account the combined influence of atmospheric turbulence and pointing errors. In addition, the effects of aperture-averaging on the average capacity of FSO links employing partially coherent beams (PCBs) are examined. Results show that PCBs are desirable in the weak-to-moderate turbulence regime, whereas highly coherent laser sources are preferred under strong fluctuations conditions; and there exist optimality in the optical beam parameters for different atmospheric channel conditions. Near-optimal average capacity is best achieved through the introduction of a larger receiver aperture and the joint beam width and spatial coherence length optimization technique, which effectively mitigates the effects of scintillation and pointing errors.

AB - In this paper, we investigate the joint effects of beam width and the spatial coherence length in a partially coherent free-space optical (FSO) link from the information theory perspective, taking into account the combined influence of atmospheric turbulence and pointing errors. In addition, the effects of aperture-averaging on the average capacity of FSO links employing partially coherent beams (PCBs) are examined. Results show that PCBs are desirable in the weak-to-moderate turbulence regime, whereas highly coherent laser sources are preferred under strong fluctuations conditions; and there exist optimality in the optical beam parameters for different atmospheric channel conditions. Near-optimal average capacity is best achieved through the introduction of a larger receiver aperture and the joint beam width and spatial coherence length optimization technique, which effectively mitigates the effects of scintillation and pointing errors.

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Capacity analysis of free space optical links for a partially coherent Gaussian beam over a turbulent channel with pointing errors

Abstract

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Keywords

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