The IFCD series of high-speed demodulators use the interference fringes counting method to precisely demodulate the length change of the F-P cavity. Its bandwidth can be up to 100MHz. And it can optionally use two laser source with different wavelength at the same time to do the demodulation, which greatly improves the accuracy and reliability. Thanks to the low loss of C-band source transmitting in the fiber, the demodulator can be used for long-distance detection or monitoring. The IFCD series are compatible with FP-PI and FP-PM pressure sensor and used for high-speed pressure monitoring.
