| 摘要 |
PURPOSE: An optical sensor system is provided for the optical fiber sensing system using the fiber Bragg grating, which is measured the time division measurement machine, and for a number of a sensor element between 50 and 400 of FBG sensor without additional filter and complicated rate measurement device. CONSTITUTION: The system has a plurality of reflect Bragg gating. Each gating includes the function of sensor element, and has the only position and the only wavelength ingredient reflecting incident light. An optical system for detecting perturbations indicative of the performance of the piece of equipment being monitored is disclosed. The optical system comprises sensors (12), each of which uses Bragg gratings (12A - 12N), induced therein and wherein the Bragg gratings (12A - 12N) are arranged into a preselected distribution and each Bragg grating returns, when subjected to incident light, a narrowbeam signal (22, 24, 26) identified by a predetermined wavelength. The optical system utilizes at least one interferometer (56) whose operation is interlinked with optical multiplexing techniques, such as differentiate across multiplying and time division multiplexing.
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