Optical fuse effect in a tunable liquid crystal waveguide with a Cr grating coupler

C. Kamaga; Y. Segawa; S. Tikhodeev; T. Ishihara

doi:10.1063/1.2800795

Optical fuse effect in a tunable liquid crystal waveguide with a Cr grating coupler

C. Kamaga, Y. Segawa, S. Tikhodeev, T. Ishihara

SCI - Physics

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

2 Citations (Scopus)

Abstract

In this letter, we report on a spontaneous optical switch in a liquid crystal (LC) waveguide with a Cr grating coupler. We propose that this mechanism can be applied as a reusable optical fuse device. The dynamical response of the waveguide mode in the nematic liquid crystal was investigated in the near infrared. An incident continuous wave (cw) laser was used. When the incident intensity is below the threshold, the waveguide mode output intensity is proportional to the input. Above the threshold, the output quenches quickly. The sensitivity and the response speed can be controlled by adjusting the temperature with respect to the phase transition of LC.

Original language	English
Article number	173119
Journal	Applied Physics Letters
Volume	91
Issue number	17
DOIs	https://doi.org/10.1063/1.2800795
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2800795

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N2 - In this letter, we report on a spontaneous optical switch in a liquid crystal (LC) waveguide with a Cr grating coupler. We propose that this mechanism can be applied as a reusable optical fuse device. The dynamical response of the waveguide mode in the nematic liquid crystal was investigated in the near infrared. An incident continuous wave (cw) laser was used. When the incident intensity is below the threshold, the waveguide mode output intensity is proportional to the input. Above the threshold, the output quenches quickly. The sensitivity and the response speed can be controlled by adjusting the temperature with respect to the phase transition of LC.

AB - In this letter, we report on a spontaneous optical switch in a liquid crystal (LC) waveguide with a Cr grating coupler. We propose that this mechanism can be applied as a reusable optical fuse device. The dynamical response of the waveguide mode in the nematic liquid crystal was investigated in the near infrared. An incident continuous wave (cw) laser was used. When the incident intensity is below the threshold, the waveguide mode output intensity is proportional to the input. Above the threshold, the output quenches quickly. The sensitivity and the response speed can be controlled by adjusting the temperature with respect to the phase transition of LC.

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Optical fuse effect in a tunable liquid crystal waveguide with a Cr grating coupler

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