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), pp. 1542-1544. (doi:10.1364/OL.32.001542).

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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
Digital Object Identifier (DOI): doi:10.1364/OL.32.001542
ISSNs: 0146-9592 (print)
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ePrint ID: 65759
Date :
Date Event
1 June 2007Published
Date Deposited: 23 Mar 2009
Last Modified: 18 Apr 2017 21:51
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/65759

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