Patent ID: 6330105
Filing Date: 2001-12-11
Classification: G01C,H01S

Abstract:
A fiber optic interferometric sensor system, comprising:a pump light source;an optical fiber arranged to receive pump light from the pump light source;a first optical isolation device connected to the optical fiber, the first optical isolation device being arranged to allow only one-way propagation from the pump light source;a wavelength division multiplexer arranged to receive pump light that passes through the optical isolation device;a gain fiber connected to the wavelength division multiplexer and arranged to be optically pumped by the pump light such that the gain fiber emits a broadband optical signal that propagates to the wavelength division multiplexer;an output optical fiber connected to the wavelength division multiplexer and arranged to guide a portion of the broadband optical signal emitted by the gain fiber;a second optical isolation device connected to the output optical fiber, the second optical isolation device being arranged to allow only one-way propagation from the output optical fiber; anda fiber optic interferometric sensor connected to the second optical isolation device to receive the broadband optical signals guided by the output optical fiber.