We report the development of a compact near-infrared (NIR) laser-based trace methane (CH
4) detection system. This detection system relied on a 2334 nm distributed feedback (DFB) …

A near-infrared (NIR) laser-based optical sensor was developed for atmospheric methane
(CH 4) measurement. The sensor adopted a distributed feedback (DFB) fiber laser operating …

Optical-filter-based chemical sensors have the potential to dramatically alter the field of
hazardous materials sensing. Such devices could be constructed using inexpensive …

Optical filter-based chemical sensing techniques provide a new avenue to develop low-cost
infrared sensors. These methods utilize multiple infrared optical filters to selectively measure …

Passive infrared (IR) systems enable rapid detection of chemical vapors but are limited by
size, weight, cost, and power. Previously, the authors reported a novel passive sensor that …

This paper describes the application of a human color vision approach to infrared (IR)
chemical sensing for the discrimination between multiple explosive materials deposited on …

An optical-filter-based sensor that was designed to mimic human color vision was recently
developed. This sensor uses three mid-infrared optical filters to discriminate between …

Color vision results from the interaction of retinal photopigments with reflected or transmitted
visible light. The International Commission on Illumination (CIE) developed the CIE color …

Detection of concealed hazardous materials is a pressing need for the global defense
community. To address this need, the development of reliable and readily-deployable …

Increasing the selectivity of sensors, while at the same time reducing their complexity, size
and cost, are challenges to the sensing community. To this end, an area of exploration has …