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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 17776–17781

Electrically tunable high Q-factor micro-ring resonator based on blue phase liquid crystal cladding

Chun-Ta Wang, Yuan-Cheng Li, Jui-Hao Yu, Cheng Yu Wang, Chih-Wei Tseng, Hung-Chang Jau, Yung-Jui Chen, and Tsung-Hsien Lin  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 17776-17781 (2014)

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Abstract: This work demonstrates an electrically tunable silicon nitride (SiN) micro-ring resonator with polymer-stabilized blue phase liquid crystals (PSBPLCs) cladding. An external vertical electric field is applied to modulate the refractive index of the PSBPLCs by exploiting its fast-response Kerr effect-induced birefringence. The consequent change in the refractive index of the cladding can vary the effective refractive index of the micro-ring resonator and shift the resonant wavelength. Crystalline structures of PSBPLCs with a scale of the order of hundreds of nanometers ensure that the resonator has a very low optical loss. The measured tuning range is 0.45 nm for TM polarized light under an applied voltage of 150V and the corresponding response time is in the sub-millisecond range with a Q-factor of greater than 20,000.

© 2014 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:

Original Manuscript: June 12, 2014
Revised Manuscript: July 7, 2014
Manuscript Accepted: July 7, 2014
Published: July 14, 2014

Chun-Ta Wang, Yuan-Cheng Li, Jui-Hao Yu, Cheng Yu Wang, Chih-Wei Tseng, Hung-Chang Jau, Yung-Jui Chen, and Tsung-Hsien Lin, "Electrically tunable high Q-factor micro-ring resonator based on blue phase liquid crystal cladding," Opt. Express 22, 17776-17781 (2014)

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