PRESSURE COMPENSATED OPTICAL ACCELEROMETER, OPTICAL INCLINOMETER AND SEISMIC SENSOR SYSTEM

摘要

AN OPTICAL ACCELEROMETER INCLUDES MEANS FOR CHANGING THE LENGTH OF AT LEAST ONE OPTICAL FIBER (14) IN RESPONSE TO ACCELERATION FUNCTIONALLY COUPLED TO THE AT LEAST ONE OPTICAL FIBER (14). THE FIBER (14) AND THE MEANS FOR CHANGING LENGTH ARE ENCLOSED IN A PRESSURE COMPENSATED HOUSING (122). THE HOUSING (122) IS FILLED WITH A SUBSTANTIALLY INCOMPRESSIBLE FLUID OR GEL.