参数 符号 数值 单位 备注
波长范围 (C波段) Δλ 39.2 nm 1529nm to 1568.2nm
通道数 Channels 4
每通道连接传感器数量4 Sensors 1 to 30 4ch * 30 = 120 传感器 (假设光栅波长间隔为1.2nm)
采样间隔/分辨率 Δλ step 1 pm
juedui波长精度 Δλ abs < ± 1 pm 采用气体吸收室作为长期参考
短期波长精度 Δλ < 0.2 pm 精度 0.2pm (1σ) ，8小时测量
线宽 Δv 20 MHz
波长重复性1 Δλ std-dev < 0.05 pm
每通道激光器输出功率 P +1 to +5 dBm 支持反射率1%的光栅，可承受20dB光功率损失
扫描频率(光栅峰值tance) F SWEEP 1/2/4/8 kHz 2 kHz @ 39.2nm, 4 kHz @ 18nm 和 8 kHz @ 8nm 操作模式可选
扫描频率 (光谱模式 @ 1pm)3 F SCAN 16 Hz 单通道16Hz, 4通道时4Hz
偏振态开关 N Pol 2 States 启用时每次扫描调整偏振态(仅支持1kHz模式)
传感器范围/距离2 Dist 0 to 10 km 接线光缆 (0 to 7.5km) FBG 测试间距(0 to 3.25km)
输入电压 Vin 12 V 100v to 240v AC 自适应，支持12v直流电源
耗电量 P 25 W
工作温度范围 T 0 to 55 C -20C to +55C 工作温度范围版本可选
尺寸/重量 324 * 276 * 88 (W x D x H) mm / 4.4 kg 机箱外壳黑色
测试报告 EN55022, EN55024, EN61000
通信接口 100Mbps Ethernet, REST 控制接口和多点数据输出格式/接口
支持的软件 Femtosense 控制工具，Labview 接口示例, 更多支持文件
偏振模块选项 I4G: Standard Polarization option using polarization switch, I4G-P1: Passive depolarizer option optimized for FS-FBGs,
I4G-P2: Active scrambler option optimized for high speed Bi-FBGs, I4G-PM: Single channel PM optimized for PM-FBGs R&D
FBGs from 40pm to 1.5nm FWHM are supported with best results for 4 kHz and 8 kHz modes obtained using 160pm FBGs.
Standard deviation measured over a 10 second duration for a stable FBG peak. The FBG FWMH (full width half maximum) is 100pm and the measured reflected FBG peak power is ~-15dBm. The interrogator sweep speed is 1000Hz resulting in a signal bandwidth of 500Hz.
Dynamic programmable receiver gain per sensor (4 levels covering 12 dB of gain) delivering >30dB optical power dynamic range(saturation-minimum detectable power levels)@kHz sweep rates.
Bi-FBG (birefringent FBGs), FS FBGs (Femtosecond FBGs), PM-FBG (Polarization maintaining FBGs) and MS-FBGs (Microstructured FBGs) are supported at all update rates.
