.Two-function light source in a FBG multi-point sensing system[J].Optoelectronics Letters,2007,3(3):219-221 Two-function light source in a FBG multi-point sensing system HE Shi-ya DENG Yan-hao YU Yang HU Shu-yang GUAN Zheng College of Applied Sciences, Beijing University of Technology, Beijing 100022, China Abstract:       In this paper, a two-function light source is recommended. It can both amplify the light power and demodulate the wavelength signal. Its output power is 1000 times as high as traditional broadband light source (BBS) and it can demodulate the signal by scanning wavelength in 30 nmof bandwidth range in the situation of 1550 nm central wavelength. This kind of light source effectively solves the problem of light energy supply in more-point measurement of FBG and simplifies the structure of sensing measurement. Hits: 3482 Download times: 227 View Full Text    Download reader