Design of System for Rugged, Low-Noise Fiber-Optic Access to High-Temperature, High-Pressure Environments

被引：13

作者：

Whitney, Jean M. ^{[1
]}

Takami, Kuya ^{[1
]}

Sanders, Scott T. ^{[1
]}

Okura, Yasuhiro

机构：

[1] Univ Wisconsin, Engine Res Ctr, Madison, WI 53706 USA

来源：

IEEE SENSORS JOURNAL | 2011年 / 11卷 / 12期

关键词：

Absorption spectroscopy; modal noise analysis; optical fiber sensors; SPARK PLUG; FUEL CONCENTRATION; GAS TEMPERATURE; MODAL NOISE; LASER; THERMOMETRY; TOMOGRAPHY; ENGINES;

D O I：

10.1109/JSEN.2011.2156780

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper details a new design for fiber-optic access to harsh environments, with a particular focus on absorption spectroscopy in high-temperature, high-pressure combustion systems. A key component is a fiber-fused rod lens assembly which tolerates temperatures above 1100 degrees C and enables simple optical access without interferences from etalons or ambient absorbers. The fibers, rod lenses, and supporting ports are designed to provide line-of-sight optical access without the need for adjustable optomechanics. Fiber modal noise was minimized by actively aligning a photodiode to the multimode fiber's output facet, resulting in a shot-noise-limited SNR of 53 000 for the system.

引用

页码：3295 / 3302

页数：8

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