Related Experiment Video
Updated: Jun 19, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
High-optical-isolation low-loss moderate-switching-speed nematic liquid-crystal optical switch
Abstract:
A bulk polarization-rotation-based 1 x 2 optical switch is demonstrated by use of a birefringent-mode parallel-rub nematic liquid-crystal cell and a calcite Thompson-prism polarizing beam splitter. With 633-nm linearly polarized light the switch output ports exhibit a >36-dB optical isolation with less than -0.75 dB of optical insertion loss. A >1.5-ms switching speed is demonstrated for a cascade cell optical arrangement by means of the transient nematic effect with >30 dB of optical isolation and -1.45 dB of optical loss.
Related Concept Videos
MOSFET: Enhancement Mode
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
MOSFET
In an n-MOSFET, the structure includes n-type source and drain...
Switching of BJT
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
Schottky Barrier Diode
Characteristics of MOSFET
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...

