This paper reports on an optical blood test device using a micro Fabry-Perot interferometer (micro FPI) implanted in a body. Since we intend to measure many kinds of information from blood by using only one device, we have developed a micro FPI. A prototype of the micro FPI was fabricated beforehand to check the characteristics of the micro FPI. The prototype can be used in wide wavelength ranging from visible light to near-infrared. It transmits the light from 30 to 80 % in the range. The light transmittances of arterial blood and venous blood were measured by the prototype. Based on the prototype, a micro FPI was fabricated. The characteristics of the micro FPI are similar to the prototype. It turns out that this micro FPI has sufficient characteristics to measure the oxygen concentration.

References :
Tetsuji Dohi, Kiyoshi Matsumoto, Isao Shimoyama, “The Optical Blood Test Device with the Micro Fabry-Perot Interferometer,” 17th IEEE International Conference on Micro Electro Mechanical Systems (MEMS '04), pp. 403-406, Maastricht, The Netherlands, Jan. 25-29, 2004. [Proceedings]

Tetsuji Dohi, Kiyoshi Matsumoto, Isao Shimoyama, “The Micro Fabry-Perot Iinterferometer fot The Spectrum Endoscope,” 18th IEEE International Conference on Micro Electro Mechanical Systems (MEMS '05), pp. 830-833, Miami, Fulorida, USA, January 30-February 3, 2005. [Proceedings]