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Recording of volume hologram using a beam pattern from tapered optical fiber

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3 Author(s)
Kim, Ki Hyun ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Yong hoon Kang ; Byoungho Lee

A photorefractive volume hologram was recorded and probed using light diffracted from a tapered optical fiber as a reference beam. A single-mode fiber (SMF) was chemically etched and tapered to give a complicated beam pattern, and it is shown that the tapered optical fiber can be utilized to increase the storage density of the volume hologram. Spatial selectivity of the volume hologram with this method was increased by two times compared to the normal SMF referencing, which is due to the fact that the complicated beam pattern has little correlation with its shifted version.

Published in:

Photonics Technology Letters, IEEE  (Volume:9 ,  Issue: 12 )