Demonstration of 100 GHz electrically tunable liquid-crystal Bragg gratings for application in dynamic optical networks


Adikan, F.R. Mahamd, Gates, J.C., Dyadyusha, A., Major, H.E., Gawith, C.B.E., Sparrow, I.J.G., Emmerson, G.D., Kaczmarek, M. and Smith, P.G.R. (2007) Demonstration of 100 GHz electrically tunable liquid-crystal Bragg gratings for application in dynamic optical networks. Optics Letters, 32, (11), 1542-1544. (doi:10.1364/OL.32.001542).

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Original Publication URL: http://dx.doi.org/10.1364/OL.32.001542

Description/Abstract

We demonstrate liquid crystal-based integrated optical devices with >140GHz electrical tuning for potential applications in dynamic optical networks. Bragg wavelength tuning covering five 25GHz WDM channel spacings has been achieved with 170V (peak-to-peak) sinusoidal voltages applied across electro-patterned ITO-covered glass electrodes placed 60μm 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.

Item Type: Article
ISSNs: 0146-9592 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Physics and Astronomy
ePrint ID: 65759
Date Deposited: 23 Mar 2009
Last Modified: 27 Mar 2014 18:47
URI: http://eprints.soton.ac.uk/id/eprint/65759

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