The simple and practical variable optical attenuator using a piezoelectric sheet containing an optical fiber

Seungtaek Kim; Heuiseok Kang; Sungbok Kang; Won Kim; Hoon Jeong; Youngjune Cho

doi:10.1117/12.685676

19 October 2006 The simple and practical variable optical attenuator using a piezoelectric sheet containing an optical fiber

Seungtaek Kim, Heuiseok Kang, Sungbok Kang, Won Kim, Hoon Jeong, Youngjune Cho

Author Affiliations +

Proceedings Volume 6374, Optomechatronic Actuators, Manipulation, and Systems Control; 63740G (2006) https://doi.org/10.1117/12.685676
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

In this letter, we proposed a new method for a variable optical attenuator (VOA) through controlling a mechanical misalignment between 2 single mode fibers using a piezoelectric sheet. A piezoelectric sheet with 3 electrodes is adopted in our proposed structure. We can change amount of the bend of the PZT sheet by controlling the applied voltage on the inner electrode of the PZT sheet, which causes the optical loss to be dependent on the applied voltage. The numerical analysis about the optical loss related to the various mechanical offsets is also investigated. From our experimental results, the dynamic range of the proposed structure is about from 0 to 56 dB when the applied voltage range is from 0 to 22V DC. In our previous work using the piezoelectric tube, the dynamic range is about from 0 to 25dB when it is from 0 to 600V DC. The required voltage to get the same attenuation is dramatically reduced. It can make it more practical in the optical communication field.

Citation Download Citation

Seungtaek Kim, Heuiseok Kang, Sungbok Kang, Won Kim, Hoon Jeong, and Youngjune Cho "The simple and practical variable optical attenuator using a piezoelectric sheet containing an optical fiber", Proc. SPIE 6374, Optomechatronic Actuators, Manipulation, and Systems Control, 63740G (19 October 2006); https://doi.org/10.1117/12.685676

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KEYWORDS

Ferroelectric materials

Optical fibers

Electrodes

Variable optical attenuators

Cameras

Single mode fibers

Numerical analysis

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