CUED Publications database

Ferroelectric liquid crystal mixture integrated into optical waveguides

Hu, X and Hadeler, O and Coles, HJ (2012) Ferroelectric liquid crystal mixture integrated into optical waveguides. Journal of Lightwave Technology, 30. pp. 938-943. ISSN 0733-8724

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Abstract

We report an on-chip integrated ferroelectric liquid crystal (FLC) waveguide structure suitable for telecommunication applications. Single gaps with different widths of 5, 10, and 20 μ m inside individual silica waveguides were filled with an FLC mixture. The waveguide devices operate as a binary switch or an attenuator in a temperature range from 30 °C to 60 °C. The FLC mixture exhibited a good alignment quality in these gaps without alignment layers. A good extinction ratio of up to 33.9 dB and a low insertion loss of <4.3 dB at λ = 1550 nm were observed. Switching times of <100 μs were obtained for the low electric fields applied in this experiment. © 2012 IEEE.

Item Type: Article
Uncontrolled Keywords: Ferroelectric liquid crystal (FLC) integrated optics optical switch telecommunication variable optical attenuator
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:01
Last Modified: 08 Dec 2014 02:38
DOI: 10.1109/JLT.2012.2184738