A free space adaptive optical interconnect is reported, in which an optically modulated channel from a vertical-cavity surface-emitting laser at 1.25 Gb/s is steered using reconfigurable binary phase gratings displayed on a ferroelectric liquid crystal on silicon (LCOS) spatial light modulator (SLM), to correct for misalignment. The optical system, and addressing scheme to maintain a transparent optical path, is described. The measured optical losses total 13.6 dB, sufficient to give a bit error rate (BER) of 10-12 with current optical transmitter and receiver technology. This is, to our knowledge, the first demonstration of a high-speed data transmission through an adaptive optical interconnect using an "off-the-shelf" commercial ferroelectric display panel.
© 2006 IEEE
Charley J. Henderson, Diego Gil Leyva, and Timothy D. Wilkinson, "Free Space Adaptive Optical Interconnect at 1.25 Gb/s, With Beam Steering Using a Ferroelectric Liquid-Crystal SLM," J. Lightwave Technol. 24, 1989- (2006)