| 摘要 |
<p>P./OPER/SPM/ChenTs/The Ausowtraa NAtional Univs.iy/l2645790. Interfrometc ssor/SpcspevI7_desc doc.-05-10-17 In an interferometric sensor, a single longitudinal mode laser source (100) to provide selected wavelength radiation (104). A modulator (102) modulate the frequency or phase of the radiation. A Fabry-Perot interferometer (106) is formed by Bragg Gratings written 5 into an optical fibre; the interferometer is responsive to the modulated radiation and produces a reflected, or transmitted, optical output signal (108) that depends on the interferometer path length. A demodulator (110) demodulates the optical output signal and produce a measurement signal (114) indicative of the optical path length of the interferometer. P /OPERkSPMTCI.cns1Th, A~sua I... Nam.o,] Un I'CSIYM645790 - Inleerwnilc smwr/Sp-/spv I 7_fgs dm.05. 10.11 - FIGURE 1/19 102 modulation modulator signal 1 modulated I 06. optical output / 110 measurement</p> |
