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논문 기본 정보

자료유형
학술저널
저자정보
Duk-Hyun Lee (강원대학교) Jae Y. Park (강원대학교)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.5 No.2
발행연도
2010.6
수록면
337 - 341 (5page)

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초록· 키워드

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In this paper, an extremely low voltage operated micro corner cube retroreflector (CCR) was fabricated for free-space optical communication applications by using bulk silicon micromachining technologies. The CCR was comprised of an orthogonal vertical mirror and a horizontal actuated mirror. For low voltage operation, the horizontal actuated mirror was designed with two PZT cantilever actuators, torsional bars, hinges, and a mirror plate with a size of 400 ㎛ × 400 ㎛. In particular, the torsional bars and hinges were carefully simulated and designed to secure the flatness of the mirror plate by using a finite element method (FEM) simulator. The measured tilting angle was approximately 2º at the applied voltage of 5 V. An orthogonal vertical mirror with an extremely smooth surface texture was fabricated using KOH wet etching and a double-SOI (silicon-on-insulator) wafer with a (110) silicon wafer. The fabricated orthogonal vertical mirror was comprised of four pairs of two mutually orthogonal flat mirrors with 400 ㎛ (length) × 400 ㎛ (height) × 30 ㎛ (thickness). The cross angles and surface roughness of the orthogonal vertical mirror were orthogonal, almost 90° and 3.523 ㎚ rms, respectively. The proposed CCR was completed by combining the orthogonal vertical and horizontal actuated mirrors. Data transmission and modulation at a frequency of 10 Hz was successfully demonstrated using the fabricated CCR at a distance of approximately 50 ㎝.

목차

Abstract
1. Introduction
2. Design and Fabrication
3. Measurements and Results
4. Conclusion
Acknowledgements
References

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UCI(KEPA) : I410-ECN-0101-2010-560-002993708