The 2 × 2 Polarization Maintaining Optical Circulator is a compact, high performance lightwave component that  
routes incoming signals from Port 1 to Port 2, incoming Port 2 signals to Port 3, and incoming Port 3 signals to Port 4.
This component provides high isolation, low insertion loss, high extinction ratio, and excellent environment stability.
Parameter
Operating Wavelength Range
Typ. Isolation, λc, 23 °C
Min. Isolation, all wavelength range, 23 °C
Min. Extinction Ratio
Min. Crosstalk (1 → 3,  2 → 4)
Min. Return Loss
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.
*The routing path: Type A: 1 → 2, 2 → 3, 3 → 4; Type B: 1 → 2, 2 → 3, 3 → 4, 4 → 1
Ordering Information
DPMCIR-①①②③④⑤
②: Type ③: Connector Type ④: Fiber Jacket ⑤: Fiber Length
31 - 1310 nm 1 - Type A 1 - FC/UPC B - 250 μm Panda fiber Q - 0.75 m
55 - 1550 nm 2 - Type B 2 - FC/APC L - 900 μm loose tube   S - Specify
SS - Specify 3 - SC/UPC S - Specify
4 - SC/APC
N - None
S - Specify
4- port Polarization Maintaining Optical Circulator
Type BType A
Specifications
(DPMCIR Series)
1310 or 1550
Unit
nmCenter Wavelength (λc)
Typ. Insertion Loss, λc , 23 °C,
①①: Wavelength
Storage Temperature
Max. Tensile Load
Package Dimensions
Max. Optical Power (Continuous Wave)
Max. Insertion Loss, all temperature, all wavelength range
Peak Isolation