The Faraday Rotator Mirror (FRM) method is an important solution for suppressing polarization-induced signal fading in interferometric fiber optic sensing systems. In theory, it can completely eliminate polarization fading, but since the rotation angle of the selected FRM is not exactly 45°, residual polarization-induced phase noise will appear in the system. The Faraday Rotator Mirror Michelson interferometer used in the hydrophone can control the difference in length of the two arms to within 1 mm, achieving a low-cost miniaturized design
产品特点Moisture resistant、 Pressure resistant、 Miniature、 Specially designed for hydrophones simplifies optical design
产品货号A80151401
应用领域Fiber optic sensing、 Fiber optic hydrophone
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Sherry
电话:16628709332
邮箱:moli@microphotons.com
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Parameter
Structure | Unit | 1X2/2X2 |
Working wavelength | nm | 1310/1550 |
Working bandwidth | nm | ±20nm |
Operating power | mW | 500 |
Insertion loss | dB | 3.8 |
Polarization loss | dB | 0.1 |
Split ratio deviation | % | 3 |
Rotation angle | Deg | 45 |
Arm length difference error | mm | 1 |
Fiber model | SMF-28E+ | |
Fiber diameter | um | 9/125 |
Package size | mm | 2.4X25-2.4x12 |
Interference optical path
High temperature storage | Temperature: +85P ±3,0 | 5000 hours |
Low temperature storage | Temperature: -55X) ±3t | 5000 hours |
High temperature and high humidity | Temperature: +85P ±2t, humidity 2=85% | 2000 hours |
Local low temperature cycle | Temperature range: -40P ~ +85Q, temperature change rate N 5t) /min Hot-keeping time: @-40,0, @85: 30min | 1000 cycles |
Temperature shock | Temperature range: -551~ +85*0 Hot-keeping time (@-55*0, @85*0): 30min, high temperature and low temperature conversion time w 5min | 10 times |
Mechanical shock test | Waveform: half sine wave, test direction: 6 directions (3 axes) Peak acceleration: 1500g, pulse duration: 6 ~ 8ms | 5 times in each direction |
Mechanical vibration test | Waveform: sine wave, test direction: horizontal and vertical Acceleration peak: 20g Frequency range: 20 ~ 2000Hz Duration: 4min/time | 4 times in each direction |
Air tightness check | Initial pressure: 0.2MPa, hydrogen tracer gas: 95% ~ 100% Pressure time: 2hrs | Leak rate w 1.0x lO^Pa ·m3/s |
High and low temperature online test | Temperature range: -40 ~ +85P Insulation time (@-40*0, @257, @85*0): 5min | 0.002dBTO |
Ordering Information
MIM-W□□□□-XX-L□□
W□ □□□:wavelength
1310: 1310nm
1550:1550nm
□□:structure
12:1×2
22:2×2
XX: fiber and connector type
SN=SMF-28E Fiber + None
SA=SMF-28E Fiber + FC/APC
SP=SMF-28E Fiber + FC/PC
PP=PM Fiber Fiber + FC/PC
PA=PM Fiber Fiber + FC/APC
L□□:
1=1cm
10=10cm
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