The index of the demodulator composed of this system
main indicators
Number of channels
1-36 (desktop) (optional)
Maximum number of measuring points / channels
18/12
Sensor center wavelength spacing
Minimum value: 0.4nm
Sampling frequency
Single channel 50Hz
Measurable parameters
And accuracy
temperature
Resolution: 0.1 ℃; measurement accuracy: ± 0.5 ℃
strain
Resolution: 1με; measurement accuracy: ± 3με
Displacement
Resolution: 0.05mm; measurement accuracy: 0.5% F · S ～ 1% F · S
Index of core optical device of demodulation system
1. Flat gain ASE light source module
Operating wavelength range: C-band 1525-1565nm; L-band 1565-1610nm; C + L-band 1525-1610nm
Output optical power: up to 17 dBm
Spectral flatness: <2.0 dB
Long-term optical power stability: <0.05 dB
Electrical connector: Mini DB10 (male)
Pigtail type: SMF-28e / PANDA PMF (9 / 125um)
Optical connector: FC / PC FC / UPC FC / APC SC / PC SC / APC or others
2. 3-port optical circulator:
Working wavelength: 1310 +/- 30nm, 1550 +/- 30nm
Insertion loss: Typ 0.6 dB, Max 0.8 dB
Channel isolation:> 40 dB
Directionality:> = 55 dB
Return loss:> = 55 dB
Crosstalk:> = 50 dB
Maximum input power: 3000mW
3. Optical switch
Working wavelength range: 1240 ~ 1640nm
Insertion loss: typ. 1.2dB, max 2.0dB
Return loss:> = 45 dB
Switching speed: <0.5ms, max 1ms
4. FBGA demodulation module
FBG demodulation analyzer provided by Bayspec, a well-known manufacturer in the industry
Operating wavelength range: standard 1525-1565nm; extended 1510-1590nm
Wavelength repeatability: ± 5 pm
Wavelength readout resolution: 1 pm
Detectable minimum wavelength change: ± 1 pm
Frequency response: standard ~ 5 Hz (RS232 / USB1.1); fast ~ 5 kHz (USB2.0)
Single channel input power range:-60 to -20 dBm or specified value
Power resolution: 0.1 dB
Interface: RS232 or USB
Software: contains GUI evaluation software and DLL software for secondary development
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