Light-controllable photoresponsive liquid-crystal photonic crystal fiber

Optics Express
V K S Hsiao, Chang-Yu Ko

Abstract

We have developed all-optical modulation of photonic crystal fiber (PCF) by infiltrating photoresponsive liquid crystal (LC) into the voids within the cladding structure. The photo-induced phase transformation of the photoresponsive LC modulates the effective refractive index of the photoresponsive LC-filled cladding, thereby creating an environment of modifiable total internal reflection that tunes the output intensity of guided light upon the stimulus of optical field. The modulation range for the 632 nm wavelength is 10 dB and the response time for switching is less than 1 second by manually obstructing the pumping light path. In addition to altering the power of the pumping laser to actively tune the output intensity, the polarization direction of the pumping laser can also tune the output intensity by 5 dB.

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Citations

Jul 31, 2012·Lab on a Chip·D C ZografopoulosR Beccherelli
May 9, 2012·Optics Express·Zhen LiShao-Ji Jiang
Sep 22, 2011·Optics Express·Zhe ChenJun Zhang
Mar 30, 2011·Optics Express·Yuan-Fong ChauHuang-Yi Li

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