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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 10989–10994

Optical bistability in a silicon nitride microring resonator with azo dye-doped liquid crystal as cladding material

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

Optics Express, Vol. 21, Issue 9, pp. 10989-10994 (2013)

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This investigation reports observations of optical bistability in a silicon nitride (SiN) micro-ring resonator with azo dye-doped liquid crystal cladding. The refractive index of the cladding can be changed by switching the liquid crystal between nematic (NLC) and photo-induced isotropic (PHI) states by. Both the NLC and the PHI states can be maintained for many hours, and can be rapidly switched from one state to the other by photo-induced isomerization using 532nm and 408nm addressing light, respectively. The proposed device exhibits optical bistable switching of the resonance wavelength without sustained use of a power source. It has a 1.9 nm maximum spectral shift with a Q-factor of over 10000. The hybrid SiN- LC micro-ring resonator possesses easy switching, long memory, and low power consumption. It therefore has the potential to be used in signal processing elements and switching elements in optically integrated circuits.

© 2013 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.1150) Optical devices : All-optical devices
(250.7360) Optoelectronics : Waveguide modulators

ToC Category:
Optical Devices

Original Manuscript: February 6, 2013
Revised Manuscript: April 7, 2013
Manuscript Accepted: April 15, 2013
Published: April 26, 2013

Chun-Ta Wang, Chih-Wei Tseng, Jui-Hao Yu, Yuan-Cheng Li, Chun-Hong Lee, Hung-Chang Jau, Ming-Chang Lee, Yung-Jui Chen, and Tsung-Hsien Lin, "Optical bistability in a silicon nitride microring resonator with azo dye-doped liquid crystal as cladding material," Opt. Express 21, 10989-10994 (2013)

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