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Article Dans Une Revue Journal of Optics A: Pure and Applied Optics Année : 2009

Multi-channel amplitude equalization based on liquid crystal polarization interference filters

Résumé

We propose the design of a multi-channel amplitude-equalizing polarization interference filter based on stacked liquid crystal birefringent blocks. Each block, which is optimized to control a predefined wavelength channel, consists of three components. The wavelength blocking/transmitting and the equalizing actions are provided by the liquid crystal component whose optical path difference varies between two particular values when its birefringence is electrically controlled. For a typical three-channel equalizing filter, the three liquid crystal cells provide all eight possible combinations to block/transmit channels and also allow us to independently equalize their corresponding levels. The benefit of such a polarization-based filter is that it operates without free-space demultiplexing optics and with no moving parts. It can be used as a key element in the present reconfigurable optical networks

Dates et versions

hal-01357649 , version 1 (30-08-2016)

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Citer

Rachid Hamdi, Badr-Eddine Benkelfat, Bruno Vinouze, Malek Benslama. Multi-channel amplitude equalization based on liquid crystal polarization interference filters. Journal of Optics A: Pure and Applied Optics, 2009, 11 (10), pp.1 - 6. ⟨10.1088/1464-4258/11/10/105402⟩. ⟨hal-01357649⟩
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