The Polarization Maintaining Isolator is characterized with low insertion loss, high isolation, high return loss,
high extinction ratio and excellent environmental stability and reliability. It is ideal for polarization maintaining
fiber amplifers, fiber lasers, high speed communication systems and instrumentation applications.
Parameter
Min. Isolation, λc ± 10 nm, 23 °C
polarization states
Max. Optical Power (Continuous Wave) mW
*IL is 0.3 dB higher, RL is 5 dB lower, and ER is 2 dB lower for each connector added. Connector key is aligned to slow axis.
Ordering Information
PMI-①②②③④⑤⑥⑦
①: Stage ②②: Wavelength ③: Grade ④: Connector Type
1 - Single stage 31 - 1310 nm P - Premium 1 - FC/UPC
2 - Dual stage 48 - 1480 nm A - A grade 2 - FC/APC
55 - 1550 nm 3 - SC/UPC
SS - Specify 4 - SC/APC
N - None
⑤: Fiber Jacket ⑥: Fiber Length ⑦: Working Axis S - Specify
B - 250 μm Panda fiber Q - 0.75 m F - Fast axis blocked
D - 400 μm Panda fiber S - Specify B - Both axis working
L - 900 μm loose tube  
S - Specify
-5 to +70
°C -40 to +85
Package Dimensions
0.7 0.9
Min. Return Loss (Input/Output) dB 55/50 55/50 55/50 55/50
45
Typ. Insertion Loss, λc ± 20 nm, 23 °C, all polarization states dB 0.4 0.5 0.5 0.7
dB 20 18 20 18
Typ. Peak Isolation dB 42 40 58
Grade A
Center Wavelength (λc) nm 1310, 1480 or 1550
Min. Extinction Ratio for -F Version dB 25 23 25 23