Fiber Optic Engineering Sensor System, Design Review Report.

A meeting was held, as required by CDRL A002 of Contract No. N00014-87-C-2032 and conducted per MIL-STD-1532, to orally present the findings and recommendations contained in the FOESS Phase I Preliminary Design Review Data Package, for formal review by NRL. The ray paths shown represent displacement effects only. Because the spherical mirror acts as a lens, capturing all of the propagating modes emanating from the fiber and imaging them onto the mirror, there is no modal dependence. Imaging however, increases alignment dependence requiring the use of misalignment insensitive designs, e.g. HAML. There is presently no specific data on the performance of the HAML since it is at present a concept design only. The temperature dependence of the GACPVs force-to-displacement transfer function can be reduced or eliminated by selecting a sufficiently large force constant for the optical diaphram. Gases making the transducer suitable for operation over large temperature ranges would be indentified during design and construction. The key-term Good does not mean that a particular transducer will meet a MIL-SPEC. The terms used in the table are relative only to the four candidate transducers included and are derived from realistic assessments of their potential qualities. Construction and testing is necessary to verify the comparisons.