Polarization independent VOA based on dielectrically stretched liquid crystal droplet
Abbreviated Journal Title
VARIABLE OPTICAL ATTENUATOR; FAST-RESPONSE; SWITCH; LENS; LIGHT; Optics
A polarization independent variable optical attenuator (VOA) based on a dielectrically stretched liquid crystal (LC) droplet is demonstrated. In the voltage-off state, the proposed VOA has the smallest attenuation. As voltage increases, the LC droplet is stretched by a dielectrophoretic force, which gradually deflects the beam leading to an increased attenuation. Such a VOA can cover the entire C-Band. At lambda = 1550 nm, the following results are obtained: dynamic range similar to 32 dB, insertion loss similar to 0.7 dB, polarization dependent loss similar to 0.3 dB, and response time similar to 20 ms. (C) 2012 Optical Society of America
"Polarization independent VOA based on dielectrically stretched liquid crystal droplet" (2012). Faculty Bibliography 2010s. 3515.