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Real-time active alignment demonstration for free-space optical interconnections

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3 Author(s)
Naruse, M. ; Dept. of Inf. Phys. & Comput., Tokyo Univ., Japan ; Yamamoto, S. ; Ishikawa, M.

A real-time active alignment system is reported for short-distance free-space optical interconnections that compensates for dynamical disturbances. Real-time misalignment compensation is a solution to achieve tight alignment tolerances without compromising the spatial density of the optical channels. A piezoelectric microstage and a proportional-integral-derivative (PID) control scheme was implemented in an experimental system and misalignment error compensation was demonstrated up to 118 Hz.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 11 )

Date of Publication:

Nov. 2001

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