采用密集波分复用技术的光纤水听器阵列研究

利用密集波分复用和时分多路复用技术相结合的大规模阵列结构,以Mach-Zehnder干涉型光纤水听器为例,分析了采用相位产生载波技术的频分多路复用,提出了密集波分复用技术在干涉型光纤水听器阵列应用的新方法,给出了复用体系结构,并分析了其在工程上可行性.

On the Array of Interferometric Optical Fiber Hydrophone by DWDM

Frequency division multiplexing using phase generated carrier is analyzed with the Mach-Zehnder interferometric hydrophone. By studying the large-scale array of optical fiber sensors with DWDM and TDM, a new multiplexing architecture of optical fiber hydrophone is put forward with its engineering feasibility.The multiplexing scheme has the potential to address M×N×L interferometric sensors with L channels. A modulated frequency ω_m and a interrogation wavelength λ_n can position a hydrophone for the system maintenance easily. The multiplexing architecture can be adapted for any application requiring large arrays such as ocean seismic surveying, provide a considerable reduction in the volume, weight and cost of the laser and cable.