Abstract
A fiber optic Fabry-Perot engine pressure sensor using a continuous wave laser source is implemented and tested. The operating point of the Fabrv-Perot sensor is locked to the quadrature point by electronic feedback control of laser temperature. System design considerations are described. Two systems were built and tested with a gasoline engine and a diesel engine. Pressure signals from a fiber Fabrv-Perot sensor were found to be in good agreement with, those from a conventional piezoelectric sensor. Through the tests with engines, the feasibility as a useful pressure sensing device is assesed and described. Finally, an internal mirror tensile strength test is accomplished in an effort to build more reliable Fabry-Perot sensors and the results are presented.
Choi, Han-Sun (1994). Fiberoptic Fabry-Perot engine pressure sensor system using a continuous wave laser source. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1994 -THESIS -C545.