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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 19919–19925

A bi-stable 2x2 optical switch monolithically integrated with variable optical attenuators

Bo-Ting Liao, Hsin-Hong Shen, Hsin-Hung Liao, and Yao-Joe Yang  »View Author Affiliations


Optics Express, Vol. 17, Issue 22, pp. 19919-19925 (2009)
http://dx.doi.org/10.1364/OE.17.019919


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Abstract

This work presents the development of a novel micromachined 2x2 optical switch monolithically integrated with variable optical attenuators. The proposed device can be easily realized by a standard manufacturing process with single photo mask. The key to realizing this device by such a simple approach is the employment the split-cross-bar (SCB) configuration. With this configuration, the fabrication challenges and layout constraints for accommodating all the sub-components of this dual-function device can be completely eliminated. The monolithically-integrated system has four movable mirrors, two bi-stable mechanisms and six actuators. The switching of optical signals is achieved by moving the mirrors attached on the bi-stable mechanisms using four of the actuators. The attenuation of optical power is carried out by moving the mirrors using the other two actuators and the bi-stable mechanisms. Also, only simple in-plane motions are needed for these sub-components to achieve all the functionalities. In addition, the adaption of bi-stable mechanisms can reduce the power consumption and simplify the actuation scheme. The measured insertion losses for both channels are about 1.0~1.1 dB, and the cross-talk is less than −60 dB. The attenuation range is about 30 dB for a maximum applied voltage of 20 V. Also, the measured switching time is less than 4 ms.

© 2009 OSA

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 30, 2009
Revised Manuscript: October 11, 2009
Manuscript Accepted: October 14, 2009
Published: October 19, 2009

Citation
Bo-Ting Liao, Hsin-Hong Shen, Hsin-Hung Liao, and Yao-Joe Yang, "A bi-stable 2x2 optical switch monolithically integrated with variable optical attenuators," Opt. Express 17, 19919-19925 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-22-19919


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