Probe on Feasibility of Application of Multi-point Optical Fiber Gas Sensor System in Coal Mine

The paper introduced structure and working principle of optical fiber gas sensor,and introduced working principle and new technologies of direct detection and tunable diode laser spectroscopy of multi-point fiber gas sensor system OptoSniff. The laboratory test results showed that the system has advantages of long transmission distance,fast response,high accuracy,and no periodic calibration. There is still a problem in application of the system in coal mine,namely the system can’t achieve in-place sound and light alarms.