Patent ID: 6274863
Filing Date: 2001-08-14
Classification: G01H,G01V

Abstract:
A seismic sensing device, comprising:a light source, detection measuring and processing device for providing an optical signal having different interrogation wavelengths, and being responsive to an optical seismic sensor reconfigurable array signal, for providing information about a seismic force to be sensed; andan optical seismic sensor reconfigurable array having sub-array configurations with different lengths for selectively interrogating the seismic force to be sensed with different spatial resolutions, each sub-array configuration having a sensor coil arranged between a Bragg grating reflector pair, the optical seismic sensor reconfigurable array being responsive to the different interrogation wavelengths in the optical signal, and further responsive to the seismic force, for providing an optical seismic sensor reconfigurable array signal containing information about the seismic force over different selective lengths of the optical seismic sensor reconfigurable array.