Demonstration of $100\mathrm{GHz}$ electrically tunable liquid-crystal Bragg gratings for application in dynamic optical networks

Abstract

We demonstrate liquid-crystal-based integrated optical devices with $>140\mathrm{GHz}$ electrical tuning for potential applications in dynamic optical networks. Bragg wavelength tuning covering five $25\mathrm{GHz}$ wavelength-division multiplexing channel spacing has been achieved with $170\mathrm{V}$ (peak-to-peak) sinusoidal voltages applied across electropatterned indium tin oxide–covered glass electrodes placed $60\mu \mathrm{m}$ apart. This tunability range was limited only by the initial grating strength and supply voltage level. We also observed two distinct threshold behaviors that manifest during increase of supply voltage, resulting in a hysteresis in the tuning curve for both TE and TM input light.

© 2007 Optical Society of America

Line defects and temperature effects in liquid crystal tunable planar Bragg gratings

B. D. Snow, F. R. M. Adikan, J. C. Gates, C. B. E. Gawith, A. Dyadyusha, M. Kaczmarek, and P. G. R. Smith
Opt. Express 15(25) 17129-17135 (2007)

Widely tunable electro-optic distributed Bragg reflector in liquid crystal waveguide

Giovanni Gilardi, Rita Asquini, Antonio d’Alessandro, and Gaetano Assanto
Opt. Express 18(11) 11524-11529 (2010)

Electrically modulated transparent liquid crystal -optical grating projection

Thomas Buß, Cameron L.C. Smith, and Anders Kristensen
Opt. Express 21(2) 1820-1829 (2013)

Demonstration of channelized tunable optical dispersion compensator based on arrayed-waveguide grating and liquid crystal on silicon

Kazunori Seno, Kenya Suzuki, Naoki Ooba, Kei Watanabe, Motohaya Ishii, Hirotaka Ono, and Shinji Mino
Opt. Express 18(18) 18565-18579 (2010)

Electrically tunable liquid crystal waveguide attenuators

Dong-Po Cai, Shan-Chi Nien, Hua-Kung Chiu, Chii-Chang Chen, and Chien-Chieh Lee
Opt. Express 19(12) 11890-11896 (2011)