Wavelength Tuned Fiber Bragg Grating Based on Double-direction Temperature Control
光纤光栅的双向温度/波长调谐技术研究

The Fiber Bragg Grating (FBG) is very important in the applications of fiber communication and fiber sensor nowadays. The key technique of such applications is the wavelength tuning of FBG. Hence many tuning methods are put forward and worked practicably now, but they still meet disadvantages of complicated structure, lower accuracy and so on. Therefore, FBG encapsulated with sealed shell groupware of semiconductor light source is introduced in this paper. It also put forward the method of completing double direction temperature tuning of FBG, with semiconductor cooler and negative temperature coefficient resistance (NTC) cooperated with peripheral circuit. A sealed sample of FBG with metal shell is designed and manufactured. The structure of the sample is very simple. In addition many temperature experiments are carried on at different environmental temperature of 0℃,20℃,40℃. The tuning range of FBG temperature is from -20℃ to 60℃ with a 10℃ step. These experiments demonstrate ......