DSpace Community: College of Engineering, University of Wisconsin--Madison

Estimation of Noise Induced by Multimode Optical Fibers in Optical Sensor Systems

Sun, 08 Jun 2008 22:58:59 GMT

Title: Estimation of Noise Induced by Multimode Optical Fibers in Optical Sensor Systems

Authors: Bartula, Renata J.; Conrad, Benjamin L.; Sanders, Scott T.

Abstract: We present evidence of MMF noise and introduce an algorithm that predicts the amplitude of the noise as a function of parameters such as core diameter, fiber length, and spectral resolution.

Description: Presented Thursday 16 August 2007 at the Gordon Research Conference on Laser Diagnostics for Combustion, Oxford, United Kingdom.

Frequency Combs and Hyperspectral Sources for Absorption Spectroscopy

Sun, 04 May 2008 22:58:59 GMT

Title: Frequency Combs and Hyperspectral Sources for Absorption Spectroscopy

Authors: Sanders, Scott T.

Abstract: We continue to develop laser sources for high-speed gas absorption spectroscopy. A recent source cycles through 14 wavelengths in the 1325-1666nm range every 33 microseconds for combined measurements of gas temperature, H2O, and CH4.

Description: Presented 5 May 2008 at the Conference on Lasers and Electro-Optics (CLEO) conference, San Jose, CA.

Designs and Applications of Hyperspectral Light Sources

Tue, 01 Apr 2008 14:06:49 GMT

Title: Designs and Applications of Hyperspectral Light Sources

Authors: Sanders, Scott T.

Abstract: A time-division multiplexed source that cycles through 19 wavelengths every 15 s will be described. Sensing results using this and similar sources will follow, including gas thermometry at 100kHz with a precision of 4K at 2000K.

Description: Presented 19 March 2008 at the Laser Applications to Chemical, Security, and Environmental Analysis (LACSEA) conference, St. Petersburg, FL.

STIFFNESS ANALYSES FOR THE DESIGN DEVELOPMENT OF A PROSTHETIC FOOT

Tue, 07 Aug 2007 18:05:55 GMT

Title: STIFFNESS ANALYSES FOR THE DESIGN DEVELOPMENT OF A PROSTHETIC FOOT

Authors: Schmitz (nee Baus), Anne

Abstract: There are 110 million uncleared landmines in 64 countries around the world (OSCE, 1998). There have been over 1 million landmine victims since 1975, and the number is growing at a rate of 26,000 new victims each year (One World International, 2001). One solution, the Niagara FootTM (Niagara Prosthetics and Orthotics, St. Catharines, ON, Canada) (Fig. 1) is directed towards amputees in developing countries like Thailand and El Salvador. This prosthetic foot is low cost and highly durable, since it is made of a polymer from DuPont Delrin®. Structural stiffness is a force versus deflection relationship that is a result of the geometry, material and loading of the structure. If the foot is too stiff it is unresponsive. If the foot is too flexible, the person may fall over. To evaluate the stiffness performance of the Niagara FootTM a repeatable testing procedure is needed. There are two goals to this project: to investigate the repeatability of the mechanical test and to develop an accurate finite element (FE) model validated against the test results, such that the stiffness of subsequent foot designs can be simulated before the foot is manufactured.