Title :
Real-time active alignment demonstration for free-space optical interconnections
Author :
Naruse, Makoto ; Yamamoto, Seiichi ; Ishikawa, Masatoshi
Author_Institution :
Dept. of Inf. Phys. & Comput., Tokyo Univ., Japan
Abstract :
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.
Keywords :
error compensation; integrated optoelectronics; optical arrays; optical interconnections; photodetectors; semiconductor lasers; surface emitting lasers; 118 Hz; dynamical disturbance compensation; free-space optical interconnections; misalignment error compensation; optical channels; piezoelectric microstage; proportional-integral-derivative control scheme; real-time active alignment demonstration; short-distance free-space optical interconnections; spatial density; tight alignment tolerances; Hardware; Optical arrays; Optical beams; Optical computing; Optical control; Optical interconnections; Real time systems; Stimulated emission; Very large scale integration; Vibrations;
Journal_Title :
Photonics Technology Letters, IEEE
