Analog low-loss full-range phase modulation by utilizing a V-shaped switched ferroelectric liquid-crystal cell in reflective mode
Journal article, 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

Author

David Engström

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Per Rudquist

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Jörgen Bengtsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Koen D'Havé

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Sheila Galt

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Optics Letters

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

Vol. 31 19 2906-2908

Subject Categories

Telecommunications

More information

Created

10/6/2017