Analog low-loss full-range phase modulation by utilizing a V-shaped switched ferroelectric liquid-crystal cell in reflective mode
Artikel i vetenskaplig tidskrift, 2006

We have studied the analog (V-shaped switching) mode in ferroelectric liquid crystals in reflective mode for analog phase modulation applications. We have found that several combinations of cell thicknesses and input polarization states exist for which near-lossless analog phase modulation with a range of ~2π rad is obtained, and we demonstrate one such combination experimentally. Despite a slight deviation from the ideal conditions, e.g., the tilt angle was 38° instead of the desired 45°, virtually pure 1.6π rad phase modulation was obtained; the measured values agree very well with our numerical simulations of the real device.

Liquid-crystal devices

Phase modulation

Spatial light modulators

Liquid crystals

Polarization

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 2906-2908

Ämneskategorier

Telekommunikation