Electrically tunable liquid crystal waveguide attenuators

Dong Po Cai; Shan Chi Nien; Hua Kung Chiu; Chii Chang Chen; Chien Chieh Lee

doi:10.1364/OE.19.011890

Electrically tunable liquid crystal waveguide attenuators

Dong Po Cai, Shan Chi Nien, Hua Kung Chiu, Chii Chang Chen, Chien Chieh Lee

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The attenuator for the wavelength at 1550 nm is fabricated by using the capillary effect to infiltrate liquid crystal (LC) E7 into hollow waveguides (HWGs) on silicon substrate with SiO₂ cladding layer. The length of the waveguide is 0.4 cm. The device can be operated with relatively low driving voltage below 5 V_pp with the distance between two electrodes to be 9 μm. The light attenuation of the device can be over 30 dB. The performance of the device is independent of the polarization states of the input light.

Original language	English
Pages (from-to)	11890-11896
Number of pages	7
Journal	Optics Express
Volume	19
Issue number	12
DOIs	https://doi.org/10.1364/OE.19.011890
State	Published - 6 Jun 2011

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AU - Cai, Dong Po

AU - Nien, Shan Chi

AU - Chiu, Hua Kung

AU - Chen, Chii Chang

AU - Lee, Chien Chieh

PY - 2011/6/6

Y1 - 2011/6/6

N2 - The attenuator for the wavelength at 1550 nm is fabricated by using the capillary effect to infiltrate liquid crystal (LC) E7 into hollow waveguides (HWGs) on silicon substrate with SiO2 cladding layer. The length of the waveguide is 0.4 cm. The device can be operated with relatively low driving voltage below 5 Vpp with the distance between two electrodes to be 9 μm. The light attenuation of the device can be over 30 dB. The performance of the device is independent of the polarization states of the input light.

AB - The attenuator for the wavelength at 1550 nm is fabricated by using the capillary effect to infiltrate liquid crystal (LC) E7 into hollow waveguides (HWGs) on silicon substrate with SiO2 cladding layer. The length of the waveguide is 0.4 cm. The device can be operated with relatively low driving voltage below 5 Vpp with the distance between two electrodes to be 9 μm. The light attenuation of the device can be over 30 dB. The performance of the device is independent of the polarization states of the input light.

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DO - 10.1364/OE.19.011890

M3 - 期刊論文

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JO - Optics Express

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IS - 12

ER -

Electrically tunable liquid crystal waveguide attenuators

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