[Study on the method to adjust optical fiber's spectrum attenuation with the Fourier transform].
A method based on Fourier transform to compensate the non-linear attenuation of optical fiber used as a probe in a spectrum-collecting system was proposed. First the output electric currents of photoelectric tube with and without fiber were transformed to the frequency field. So an adjustable function in frequency field was obtained, and the adjustable function was transformed to the spectrum field, so the final adjustable function was obtained. A photoelectric system was designed for testing. With visible light, this method can make the error rate of fiber transmission as low as less than 1.54%. It is proved that the method is fit for adjusting some optical fiber spectrum attenuation.
Meng
Xian-jiang
XJ
Communication College, Jilin University, Changchun, China.
Zhang
Tie-qiang
TQ
Shi
Wei-jie
WJ
Shen
Xuan-guo
XG
D000465:Algorithms; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods; D005336:Fiber Optic Technology / Q000295:instrumentation / Q000379:methods*; D005583:Fourier Analysis; D055100:Optical Fibers; D012815:Signal Processing, Computer-Assisted; D013053:Spectrophotometry / Q000295:instrumentation / Q000379:methods*