Title :
Micromachined Fiber Optical Sensor for In Vivo Measurement of Optical Properties of Human Skin
Author :
Garcia-Uribe, Alejandro ; Balareddy, Karthik Chinna ; Zou, Jun ; Wang, Lihong V.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX
Abstract :
In this paper, we present the design, fabrication, and testing of a new micromachined fiber optic sensor probe to conduct oblique incidence diffuse reflectance spectrometry (OIDRS) for in vivo estimation of optical properties of human skins. The probe consists of three source fibers, two linear array of collection fibers, and four micromachined positioning devices for accurate alignment of the fibers. Micromachining plays a significant role in the probe development by enabling device miniaturization, low-cost fabrication, and precise assembly. The new probe has been successfully used to estimate the absorption and scattering coefficient spectra of skin with an optical spectrum between 455 and 765 nm.
Keywords :
absorption coefficients; bio-optics; biomedical measurement; fibre optic sensors; micromachining; microsensors; skin; visible spectroscopy; absorption coefficient; collection fibers; device miniaturization; fiber alignment; human skin optical properties; in vivo measurement; low-cost fabrication; micromachined fiber optical sensor; micromachined positioning devices; oblique incidence diffuse reflectance spectrometry; optical spectrum; scattering coefficient; source fibers; wavelength 455 nm to 765 nm; In vivo; Optical design; Optical device fabrication; Optical fiber devices; Optical fiber sensors; Optical fiber testing; Optical scattering; Optical sensors; Probes; Skin; Absorption coefficient; diffuse reflectance; micromachined optical probe; scattering coefficient;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2008.2003306
