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http://dx.doi.org/10.3807/KJOP.2002.13.5.408

Polarization dependent 2×2 optical switch using ferroelectric liquid crystal (FLC) Spatial Light Modulator(SLM)  

김인태 (청주대학교 정보기술공학부 레이저광정보공학)
유연석 (청주대학교 정보기술공학부 레이저광정보공학)
Publication Information
Korean Journal of Optics and Photonics / v.13, no.5, 2002 , pp. 408-413 More about this Journal
Abstract
We demonstrated a polarization dependent type 2$\times$2 optical switch, using a binary reflection type SLM. Reflection type FLC was used as a half wave retardation plate. Two inputs were controlled by each SLM for the desired output direction. In conclusion, in the "1" state the average optical loss was 6.6 ㏈, and in the "0" state the average optical loss was 14.6 ㏈, and measured the switching speed as 75 $mutextrm{s}$. By using this method, a polarization dependent type 2$\times$2 optical switch can be demonstrated and the possibility of a 4-port WDM optical switch also verified.
Keywords
optical switch; ferroelectric liquid crystal; spatial light modulator; electro-optic switch;
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