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

Volume

13

Issue

11

fYear

2001

Firstpage

1257

Lastpage

1259

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.959382

Filename

959382