13 October 2005 Dynamic modeling of cylindrical waveguide based optical attenuator
Author Affiliations +
Proceedings Volume 5970, Photonic Applications in Devices and Communication Systems; 59700U (2005); doi: 10.1117/12.628271
Event: Photonics North, 2005, Toronto, Canada
Abstract
This paper presents a mathematical model to predict the dynamic behavior of a MEMS based variable optical attenuator (VOA) and compares with ANSYS simulation values. The optical attenuation is achieved by the electrostatic actuation of a metal coated cylindrical waveguide. The waveguides are suitable for micromachined configurations. Electrostatic modeling employed in this analysis also takes into consideration the cylindrical geometry of the waveguide. The modeling utilizes Rayleigh-Ritz energy method in evaluating the fundamental and the higher natural frequencies of the system. The predicted natural frequencies of the optical system have been compared with ANSYS simulations to validate the proposed model. The variation of the dynamic performance of the system with respect to the critical design parameters, such as, applied voltage, electrode gap and length of the actuator is also presented. The results clearly indicate the applicability of the proposed method to optical attenuation.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Srinivasa Raghavendra Pendyala, Muthukumaran Packirisamy, "Dynamic modeling of cylindrical waveguide based optical attenuator", Proc. SPIE 5970, Photonic Applications in Devices and Communication Systems, 59700U (13 October 2005); doi: 10.1117/12.628271; https://doi.org/10.1117/12.628271
PROCEEDINGS
8 PAGES


SHARE
KEYWORDS
Waveguides

Electrodes

Signal attenuation

Beam shaping

Mathematical modeling

Microelectromechanical systems

Variable optical attenuators

Back to Top