ANGULAR LIMITATIONS OF POLYMER-BASED WAVE-GUIDE HOLOGRAMS FOR 1-TO-MANY V-SHAPED SURFACE-NORMAL OPTICAL INTERCONNECTS

Experimental results of 1-to-2 intraplane and of 1-to-32 interplane V- shaped fanouts are delineated. Coupling efficiencies of 48% for surfac e-normal and of 45% for near-surface-normal interplane fanout beams ar e theoretically and experimentally confirmed. The influence of the ang ular fluctuation of a device having two multiplexed waveguide hologram s with film thickness of 15 mum and index modulation of 0.04 is studie d. The angle between the two grating vectors is determined to be less than 26-degrees to keep the near-surface-normal fanout beams.