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Enhanced Link Directionality for Optical Wireless Communications

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3 Author(s)
Jin, X. ; Integrated Optics Laboratory, University of British Columbia, Kelowna, Canada ; Guerrero, D. ; Holzman, J.F.

An integrated photoconductive (PC) sensor is proposed and tested as a fundamental extension of the semiconductor switch. An enhanced field-of-view (FOV) is demonstrated for application to indoor optical wireless communications (OWC). The three-fold symmetric architecture of the corner-cube PC sensor is adapted for use with the dc-shifted ac-three-phase ({\rm ac}_{3\phi}) to establish output photocurrent characteristics that are largely independent of the incident optical angle-of-arrival. An enhanced FOV of 60^{\circ}\times 40^{\circ} is demonstrated. The device can be integrated in future OWC systems for increased channel redundancy and greater reliability.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 24 )