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We experimentally demonstrate the feasibility of the bandwidth tuning of a liquid-crystal based bandpass Lyot filter. This bandwidth tuning is achieved by applying a voltage to vary the birefringence of the liquid-crystal cells whose optical path difference takes predefined discrete values. We show that for a 2-stage liquid-crystal Lyot filter and at λi = 1.543 μm, the measured 3-dB bandwidth varies from 17 nm to 60 nm when the applied voltage increases from 0 V to 5.24 V. The shape of the transmission response remains unchanged during the bandwidth tuning process.
Published in:
Telecommunications (ICT), 2012 19th International Conference on
Date of Conference: 23-25 April 2012
- Page(s):
- 1 - 4
- E-ISBN :
- 978-1-4673-0746-8
- Print ISBN:
- 978-1-4673-0745-1
- INSPEC Accession Number:
- 12820514
- Conference Location :
- Jounieh
- Digital Object Identifier :
- 10.1109/ICTEL.2012.6221231
- Product Type:
- Conference Publications
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