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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 28 — Oct. 1, 1999
  • pp: 6036–6039

Sensitivity enhancement of integrated optical sensors by use of thin high-index films

Geoffrey R. Quigley, Richard D. Harris, and James S. Wilkinson  »View Author Affiliations


Applied Optics, Vol. 38, Issue 28, pp. 6036-6039 (1999)
http://dx.doi.org/10.1364/AO.38.006036


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Abstract

The proportion of power carried in the superstrate medium by the guided modes of integrated optical waveguides can be increased by the addition of a thin high-index film. Enhanced refractive-index sensing is demonstrated with channel waveguide Mach–Zehnder interferometers with Ta2O5 overlays. Sensitivity increases by a factor greater than 50, and a detection limit better than 5 × 10-7 is obtained. This approach is broadly applicable to sensing at waveguide surfaces where the strength of evanescent fields dictates performance.

© 1999 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(130.0130) Integrated optics : Integrated optics
(130.6010) Integrated optics : Sensors
(240.0310) Optics at surfaces : Thin films

History
Original Manuscript: March 22, 1999
Revised Manuscript: July 20, 1999
Published: October 1, 1999

Citation
Geoffrey R. Quigley, Richard D. Harris, and James S. Wilkinson, "Sensitivity enhancement of integrated optical sensors by use of thin high-index films," Appl. Opt. 38, 6036-6039 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-28-6036


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References

  1. P. V. Lambeck, “Integrated opto-chemical sensors,” Sens. Actuators B 8, 103–116 (1992). [CrossRef]
  2. C. Stamm, W. Lukosz, “Integrated optical difference interferometer as refractometer and chemical sensor,” Sens. Actuators B 11, 177–181 (1993). [CrossRef]
  3. B. J. Luff, J. S. Wilkinson, J. Piehler, U. Hollenbach, J. Ingenhoff, N. Fabricius, “Integrated optical Mach-Zehnder biosensor,” J. Lightwave Technol. LT-16, 583–592 (1998). [CrossRef]
  4. G. Stewart, B. Culshaw, “Optical waveguide modelling and design for evanescent field chemical sensors,” Opt. Quantum Electron. 26, S249–S259 (1994). [CrossRef]
  5. G. R. Quigley, R. D. Harris, J. S. Wilkinson, “Sensitivity enhancement of integrated optical sensors by thin high index films,” in Proceedings of the Eighth European Conference on Integrated Optics, (Optical Society of America, Washington, D.C., 1997), pp. 326–329.
  6. A. K. Ghatak, K. Thyagarajan, M. R. Shenoy, “Numerical analysis of planar optical waveguides using matrix approach,” J. Lightwave Technol. LT-5, 660–667 (1987). [CrossRef]
  7. Th. Schubert, N. Haase, H. Kuck, R. Gottfried-Gottfried, “Refractive index measurements using an integrated Mach-Zehnder interferometer,” Sens. Actuators A 60, 108–112 (1997). [CrossRef]

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