Reflective variable optical attenuator using liquid crystals

摘要

The present invention relates to a reflective variable optical attenuator using a liquid crystal, and in the optical attenuator according to the present invention, since an integral type liquid crystal cell in which a reflector and a liquid crystal cell are integrally formed is used, a compact design can be achieved, It is possible to drive low voltage, minimize the influence of external operation temperature change, and can exhibit sufficient attenuation performance of more than 10 to 1 within an operating voltage range of 10V or less.