22 March 2017 Modeled and experimental results of an omnidirectional free-space optical receiver architecture
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Free-space optical (FSO) communications provide point-to-point connectivity while offering many advantages in size, weight, and power as compared to radio frequency. It has the potential to provide fiber-optic data rates without the need for lengthy fiber cables. Omnidirectional FSO, also known as O-FSO systems, provide a non-line-of-sight option for data communications. They are gaining popularity in short-distance networks. Most existing O-FSO links range from 1 to 100 m and present experimental/simulated data rates ranging between 5    kb / s and 1    Mb / s . A 2.5 - Gb / s O-FSO system was recently reported with a range of 25 cm. This paper employs a fiber bundle as an O-FSO receiver. The energy collected by the receiver is related to the acceptance cone of each fiber. The fiber bundle integrates the optical power gathered by the individual fibers and couples it to the photodetector. Experimental data rates approaching 100    kb / s over a meter long system are presented, whereas simulated results support a data rate up to 52    Mb / s for distances approaching a kilometer. Theoretical and experimental optical power versus range is also presented for the proposed O-FSO architecture, using on-off keying.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Syed H. Murshid, Syed H. Murshid, Gregory L. Lovell, Gregory L. Lovell, Michael F. Finch, Michael F. Finch, } "Modeled and experimental results of an omnidirectional free-space optical receiver architecture," Optical Engineering 56(3), 036108 (22 March 2017). https://doi.org/10.1117/1.OE.56.3.036108 . Submission: Received: 29 March 2016; Accepted: 1 March 2017
Received: 29 March 2016; Accepted: 1 March 2017; Published: 22 March 2017

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