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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 20 — Oct. 15, 2012
  • pp: 4299–4301

Photonic crystal fiber for layer-by-layer assembly and measurements of polyelectrolyte thin films

Fei Tian, Jiri Kanka, Svetlana A. Sukhishvili, and Henry Du  »View Author Affiliations


Optics Letters, Vol. 37, Issue 20, pp. 4299-4301 (2012)
http://dx.doi.org/10.1364/OL.37.004299


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Abstract

The cladding air channels of an endlessly single-mode photonic crystal fiber (PCF) and the high-index sensitivity of its long-period gratings (LPG) inscribed by CO2 laser have been exploited to deposit poly(vinyl pyrrolidone) (PVPON)/poly(methacrylic acid) (PMAA) polyelectrolyte thin films via layer-by-layer assembly (LbL) and to measure the deposition process. We show that LbL can be controllably carried out within the axially aligned air channels. PCF-LPG is highly sensitive to the LbL process as reflected by 1.625nm shift in the resonance wavelength per polyelectrolyte layer incorporated. PCF-LPG is also very robust for in situ monitoring of the release of PVPON from cross-linked polyelectrolytes, which results in the formation of pH-responsive PMAA hydrogel. PCF-LPG containing the hydrogel exhibits well-behaved response to changes in solution pH over 2 to 7.5. We demonstrate that PCF-LPG is 2 orders of magnitude more sensitive than its traditional all-solid counterpart through parallel investigation.

© 2012 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(130.6010) Integrated optics : Sensors
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: August 15, 2012
Revised Manuscript: September 12, 2012
Manuscript Accepted: September 12, 2012
Published: October 11, 2012

Citation
Fei Tian, Jiri Kanka, Svetlana A. Sukhishvili, and Henry Du, "Photonic crystal fiber for layer-by-layer assembly and measurements of polyelectrolyte thin films," Opt. Lett. 37, 4299-4301 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-20-4299

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