Wideband optical propagation measurement system for characterization of indoor optical wireless channels

Mohsen Kavehrad; Jarir Fadlullah

doi:10.1117/12.840266

22 January 2010 Wideband optical propagation measurement system for characterization of indoor optical wireless channels

Mohsen Kavehrad, Jarir Fadlullah

Author Affiliations +

Proceedings Volume 7620, Broadband Access Communication Technologies IV; 76200E (2010) https://doi.org/10.1117/12.840266
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

The main objective of the presented research is to characterize an indoor wireless optical communication channel. Until recently, there have not been any comprehensive published measurements results presenting characteristics of this channel for high data rates, e. g. 1Gbit/s. To this end, a measurement setup is implemented, with a high-power laser diode acting as the optical transmitter and an avalanche photodiode acting as the receiver. Using a network analyzer, the laser is modulated by CW frequencies up to 1 GHz, which is the bandwidth of the receiver, as limited by the intrinsic capacitance and the response-time of the avalanche photodiode. A single collimated optical spot with a small elliptical shape on the ceiling is tested. The impacts of receiver orientation and configuration on the channel frequency response are investigated. These measurements will enable us to explore the possibility of higher data transmission rates, potentially beyond 1 Gbps, on indoor optical wireless channels. These channels can be a viable alternative to inherently insecure and interference-prone RF wireless channels, and therefore, could be the basis of next-generation high data rate wireless local area networks.

Citation Download Citation

Mohsen Kavehrad and Jarir Fadlullah "Wideband optical propagation measurement system for characterization of indoor optical wireless channels", Proc. SPIE 7620, Broadband Access Communication Technologies IV, 76200E (22 January 2010); https://doi.org/10.1117/12.840266

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