Controlling the operation of the engine to adapt to different conditions depends on the precise monitoring engine running, electric sensors are widely used in the world currently. As a sensing unit, the main advantage of fiber Bragg grating is the absolute measurement of wavelength encoding information. In addition, low insertion loss and narrow-band wavelength of reflection provides a benefit in a single-mode fiber on the reuse can be realized in the star-shaped fiber-optic network, serial, parallel and ri...