Course No：11121420
Title：Fiber Optic Sensing Technology and Application
Class Hours/Week: 4 Credit：2
Category：Elective
Prerequisites：Physical Optics, Optoelectronics
Audience：Undergraduate
Teaching methods:
1. Teaching by multimedia projector.
2. Give thinking questions, ask students to do it independently, and carry out discussion of the corresponding class.
3. Combined with the content of the chapters, layout the corresponding homework to consolid the teaching content.
Teaching objectives and basic Requirements:
《Fiber Optic Sensing Technology and Application》is one of professional courses for photoelectricity department. Through studying this course, students can master the basic theory of optic fiber，principle of workon optical measurement and sensing and application of optical fiber sensing, be familiar with the design method of optical fiber sensor, master the analytical ability and thinking on the actual test questions encountered in work, put forward reasonable solution schemes on problems to be solved.
Course description:
Course discusses systemly about the basic principle, method, carrying out and application. The main content includes the basic principle, fiber-optic systems converter and component connection, fiber attenuation and dispersion measurement, the basic principles of fiber-optic sensors, application of optical fiber sensor: mechanical sensor, thermal sensor, electromagnetic sensor, medical sensor andair pollution detection sensor.
The main content and the distribution of period:
The first chapter the basic principle of optic fiber 4 periods
1 the history and development, characteristics and application of fiber optic sensor
1.0 period
2 the principle of optical waveguide 1.0 period
3 the principle of optical fiber attenuation 1.0 period
4 the principle of optical fiber dispersion 1.0 period
The second chapter fiber-optic systems converter and component connection 2 periods
1 electro-optic converter—illuminator 0.5 period
2 optic- electro converter—photo detector 0.5 period
3 fiber-optic connectors and fixed splice 0.5 period
4 fiber-optic directional coupler 0.5 period
The third chapter fiber attenuation measurement 3 periods
1 optical excitation attenuation measurement 0.5 period
2 shear method 0.5 period
3 insertion loss method 0.5 period
4 backscatter method 0.5 period
5 optical time-domain reflect meters 0.5 period
6 optical frequency domain reflect meters 0.5 period
The fourth chapter fiber dispersion measurement 4 periods
1 time domain method 1 period
2 to improve signal-to-noise ratio by lock-in amplifier 0.5 period
3 to reduce the total error by pick-up method 0.5 period
4 frequency domain method 1 period
5 comparison of frequency domain and time domain 1 period
The fifth chapter the basic principles of fiber-optic sensors 5 periods
1 Intensity modulation mechanism 1 period
●reflective intensity modulation
●transmission intensity modulation
●ray film intensity modulation
●index intensity modulation
●light absorption coefficient intensity modulation
2 phase modulation mechanism 1 period
●phase modulation
●fiber-optic interferometer
●phase compression principle and differential interferometer
3 frequency modulation mechanism 1 period
●fiber-optic Doppler technique
●the limitation of fiber-optic Doppler system
4 wavelength modulation mechanism 1 period
5 polarization modulation mechanism 1 period
●Puck effect
●Kerr effect
●Faraday effect
●Photo elastic effect
●the requirements for optical fiber and optoelectronic devices
The sixth chapter optical fibre mechanical sensor 4 periods
1 optical fiber displacement sensor 1 period
●externally modulated displacement sensor
●internally modulated displacement sensor
●phase interference displacement sensor
2 optical fiber pressure and acoustic sensor 1 period
●total internal reflection optical fiber pressure sensor
●micro-bending optical fiber acoustic sensor
●dynamic pressure sensor
●polarization modulation optical fiber pressure and acoustic sensor
3 optical fiber angular velocity sensor 2 period
The seventh chapter fiber-optic thermal sensor 3 periods
1 radiation-based optical fiber temperature sensor 2 periods
●characteristics of the fiber-optic