Integrated optical Bragg-grating-based chemical sensor on a curved input edge waveguide structure

Abstract

A novel integrated optical chemical sensor based on a surface-relief Bragg grating in a waveguide with a curved input edge, and coated with a chemically sensitive polysiloxane cladding, is described. The curved edge provides a mechanism within the device fabrication that allows for alignment of the input beam to the grating to achieve Bragg scattering. As proof of principle, a low-parts-in-10⁶ toluene-vapor sensor with a fast response time is demonstrated.

© 1999 Optical Society of America

Detection of chemical vapor with high sensitivity by using the symmetrical metal-cladding waveguide-enhanced Goos-Hänchen shift

Yiyou Nie, Yuanhua Li, Zhijing Wu, Xianping Wang, Wen Yuan, and Minghuang Sang
Opt. Express 22(8) 8943-8948 (2014)

All-optical control of Bragg grating in semiconductor-coated D-shaped fiber

R. M. Ribeiro, L. R. Kawase, W. Margulis, B. Lesche, B. Sahlgren, R. Stubbe, and K. Kleveby
Opt. Lett. 24(7) 454-456 (1999)

Solgel grating waveguides for distributed Bragg reflector lasers

M. A. Fardad, H. Luo, Y. Beregovski, and M. Fallahi
Opt. Lett. 24(7) 460-462 (1999)

Nonlinear propagation effects in an AlGaAs Bragg grating filter

P. Millar, R. M. De La Rue, T. F. Krauss, J. S. Aitchison, N. G. R. Broderick, and D. J. Richardson
Opt. Lett. 24(10) 685-687 (1999)

Correlation of ultraviolet-induced stress changes and negative index growth in type IIa germanosilicate waveguide gratings

J. Canning and M. Åslund
Opt. Lett. 24(7) 463-465 (1999)