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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 3 — Feb. 1, 2010
  • pp: 2814–2821

Photo and electrical tunable effects in photonic liquid crystal fiber

Chun-Hong Lee, Ching-Hsiang Chen, Chia-Lung Kao, Chin-Ping Yu, Szu-Ming Yeh, Wood-Hi Cheng, and Tsung-Hsien Lin  »View Author Affiliations

Optics Express, Vol. 18, Issue 3, pp. 2814-2821 (2010)

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This work demonstrates photo alignment and electrical tuning effects in photonic liquid crystal fiber (PLCF). Applying voltages of 0~130V and 250~400V shifts the short and long wavelength edges of the transmission bands by about 45nm and 74nm toward longer wavelengths, respectively. An electro-tunble notch filter is formed in the PLCF without the use of gratings. The range of tunability of the notch filter is around 180nm with an applied voltage of 140~240V. This photo-induced alignment yields a permanently tilted LC structure in PCF, which reduces the threshold voltage, and can be further modulated by electric fields. The polarization dependent loss and fast response time of photo-aligned PLCF is also demonstrated. The finite-difference frequency-domain method is adopted to analyze the shift of the transmission bandgap, and the simulation results are found to correlate well with experimental data.

© 2010 OSA

OCIS Codes
(230.3720) Optical devices : Liquid-crystal devices
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Photonic Crystal Fibers

Original Manuscript: November 30, 2009
Revised Manuscript: January 18, 2010
Manuscript Accepted: January 23, 2010
Published: January 26, 2010

Chun-Hong Lee, Ching-Hsiang Chen, Chia-Lung Kao, Chin-Ping Yu, Szu-Ming Yeh, Wood-Hi Cheng, and Tsung-Hsien Lin, "Photo and electrical tunable effects in photonic liquid crystal fiber," Opt. Express 18, 2814-2821 (2010)

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