Research Article
Demonstration of Wide-angle Beam Steering Optics in Wavelength-division-multiplexing Indoor Optical Wireless LAN with Dedicated CMOS Imager
@INPROCEEDINGS{10.4108/ICST.BIONETICS2008.4746, author={Keiichiro Kagawa and Jun Tanida}, title={Demonstration of Wide-angle Beam Steering Optics in Wavelength-division-multiplexing Indoor Optical Wireless LAN with Dedicated CMOS Imager}, proceedings={1st International ICST Workshop on Technologies for Ambient Information Society}, publisher={ACM}, proceedings_a={TAIS}, year={2010}, month={5}, keywords={Indoor optical wireless LAN free-space optical communications wavelength multiplexing beam steering CMOS imager}, doi={10.4108/ICST.BIONETICS2008.4746} }- Keiichiro Kagawa
Jun Tanida
Year: 2010
Demonstration of Wide-angle Beam Steering Optics in Wavelength-division-multiplexing Indoor Optical Wireless LAN with Dedicated CMOS Imager
TAIS
ICST
DOI: 10.4108/ICST.BIONETICS2008.4746
Abstract
We are developing a new indoor optical wireless LAN system, in which dedicated CMOS imagers are utilized to offer locationaware visually-intuitive wireless communications, wavelength- or space-division-multiplexing high-speed data transfer, and compact hardware. This paper focuses on a wide-angle beam steering optics, which is a key component to realize a compact and wide-angle optical transmitter accessible to the network from anywhere in a room with 5 m by 5 m size. A prototype beam steering lens designed for a near-infrared wavelength of an 850- nm band was fabricated and demonstrated. Experimental results show that the maximum output beam angle was about ±60 degrees, which covers the 5m-by-5m room (when the vertical distance between a hub and a node was 2.0 m), and the optical power efficiency was higher than 0.8 which equals to about 1dB loss