University of California

The University of Arizona

Los Alamos National Security, LLC

Seppo Honkanen

Basil I Swanson

Karen M Grace

Nasser N Peyghambarian

Axel Schulzgen

Jacques Albert

Li Li

An optical device includes an optical fiber having a core including multicomponent phosphate glasses, and a cladding surrounding the core, and a first fiber Bragg grating formed in a first portion of the core of the optical fiber and having an index modulation amplitude greater than 2&#xd7;10.

Phosphate glass based optical device and method

The invention provides an apparatus and method for highly selective and sensitive chemical sensing. Two modes of laser light are transmitted through a waveguide, refracted by a thin film host reagent coating on the waveguide, and analyzed in a phase sensitive detector for changes in effective refractive index. Sensor specificity is based on the particular species selective thin films of host reagents which are attached to the surface of the planar optical waveguide. The thin film of host reagents refracts laser light at different refractive indices according to what species are forming inclusion complexes with the host reagents.

Waveguide-based optical chemical sensor

Growing community of inventors

Tucson, AZ, United States of America

Seppo Honkanen