Bragg 光柵解調(diào)系統(tǒng)是光柵傳感器得以實(shí)用化的關(guān)鍵。根據(jù)光纖Bragg 光柵傳感器的
傳感機(jī)理, 介紹了Bragg 光柵解調(diào)系統(tǒng)的工作原理，建立了解調(diào)系統(tǒng)模型, 提出了實(shí)現(xiàn)
Bragg 光柵解調(diào)的單片機(jī)解調(diào)系統(tǒng), 給出了詳細(xì)的軟硬件設(shè)計(jì)方案。光柵解調(diào)系統(tǒng)測(cè)量能夠精度達(dá)到±5pm,重復(fù)性最大誤差為±8pm。
關(guān)鍵字：BRAGG 光柵 F-P 解調(diào) 單片機(jī) 89C52
Abstract: Fiber Bragg Grating Demodulation System is the key to put Bragg Grating
sensor into practice. The fiber grating sensor theory and the demodulation
technology is systematically researched in this paper. The main content includes:
the principle of fiber grating sensor; the analysis of several technologies of
demodulation and the F-P filter demodulation is introduced in detail; the design
of demodulation system based on MCS system. Fiber Bragg Grating calibrating method base
on MCS can improve precision of Demodulation System equal to ±5pm, maximum error
±8pm.
Key words: Fiber-Bragg Grating, Fabry-Perot demodulation, MicroComputer on
Single-chip，89C52