Title :
A MEMS based variable optical attenuator
Author :
Cao, R.Z. ; Low, K.-S. ; Liu, A.Q. ; Hong, C.
Author_Institution :
Sch. of EEE, Nanyang Technol. Univ., Singapore
Abstract :
In this paper, a microelectromechanical variable optical attenuator (VOA) is described. The device is used to control the power in the all optical networks. Besides the advantage of low coupling loss, and the elimination of signal regeneration optoelectronics, it is compact, low cost and has good switching performance. In our laboratory, a shutter type VOA has been fabricated and setup for investigation. In this paper, the modeling and close loop control of the device are presented. Simulation and experimental results have shown that the proposed approaches improve the VOA performance.
Keywords :
closed loop systems; microswitches; optical attenuators; optical control; optical switches; predictive control; three-term control; MEMS; close loop control; low coupling loss; microelectromechanical variable optical attenuator; optical networks; signal regeneration optoelectronics elimination; Costs; Micromechanical devices; Mirrors; Optical attenuators; Optical crosstalk; Optical fibers; Optical noise; Optical variables control; Stimulated emission; Voltage;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1431882
