Three-level phase modulator based on orthoconic antiferroelectric liquid crystals
Artikel i vetenskaplig tidskrift, 2006

Surface-stabilized orthoconic antiferroelectric liquid crystals (OAFLCs) have a director tilt of θ=45° and are, with no field applied, negatively uniaxial with the optic axis perpendicular to the cell substrates. We demonstrate that OAFLCs can be utilized to achieve lossless phase modulation with three almost equidistant phase levels. This turns out to be true also for polymer-stabilized OAFLCs, where the polymer network increases the switching speed of the device without affecting the phase modulation appreciably.

Phase modulation

Liquid-crystal devices

Liquid crystals

Spatial light modulators

Författare

David Engström

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Per Rudquist

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Jörgen Bengtsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Koen D'Havé

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Sheila Galt

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Optics Letters

0146-9592 (ISSN) 1539-4794 (eISSN)

Vol. 31 3158-3160

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Telekommunikation