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1310nm Polarization Maintaining 4-Port Fiber Circulator
Polarization Maintaining (PM) Fiber Optic Circulators are irreversible, unidirectional, three-port devices that are widely used in a wide range of optical devices and applications. Our PM optical circulators are available with center wavelengths of 1064, 1310 (O-band), or 1550 nm (C-band). In addition, these PM optical circulators are available with connectorless, FC/PC, or FC/APC connectors. Optical circulators are three-port devices that can only propagate light in one direction. A signal input at port 1 will be output at port 2, and a signal input at port 2 will be output at port 3, with very little loss. Light input at port 2 will be lost when it is output at port 1, and light input at port 3 will be lost when it is output at both ports 1 and 2. Optical circulators are irreversible optical devices. Due to their high isolation and low insertion loss, fiber optic circulators are widely used in advanced communication systems such as add/drop multiplexers, bidirectional pumping systems, and dispersion compensation devices. High-power fiber circulator is an improved product developed on this basis. Idealphotons can customize a wide range of wavelengths and can withstand high power, including (850, 980, 1018, 1053, 1064, 1310, 1550, 1650nm, etc. Some wavelength powers can meet 5~10W power and polarization-maintaining (PM) fiber optical circulators.
Product features:Wavelength range: 1525-1610 nm、 Bare fiber, polarization-maintaining fiber with FC/PC connector or FC/APC connector、 Damage threshold 500 mW
Part Number:--
Application area:Differential multiplexing、 Light sensor、 Bidirectional pumping、 Bidirectional signal transmission system、 Coaxial coupling dispersion compensation device
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Parameters
Parameter | Value |
Central wavelength(nm) | 1550 or 1310 |
Bandwidth range(nm) | ±30 |
Insertion loss(dB) | ≤1.20 |
Port and operating mode | 3 port,(Port 1→2, 2→3) |
Isolation(dB) | ≥30 |
Directivity(dB) | ≥40 |
Return loss(dB) | ≥40 |
Extinction ratio(dB) | 20dB |
Withstand power(mW) | ≤500 |
Tensile load | 5N |
Polarization-dependent loss | 0.1dB |
Fiber type | PM1550 |
Operating temperature(℃) | 0~-70 |
Storage temperature(℃) | -40~85 |
Packaging size(mm) | ¢5.5×68(P1) ;90x20×9.5(P2) |
Note:
*All parameters are measured without connectors
*If connectors are added, IL will increase by 0.3dB and RL will decrease by 5dB.

Circulators are often combined with fiber Bragg gratings to separate optical channels in DWDM systems.
Dimension

Ordering Information
PM-CIR- W□□□□-S○-P▽-☆-△-XX
W□□□□:Wavelength
1310:1310nm
1550:1550nm
0532:532nm
S○:Port Structure 12:1x2(3 port)
22:2x2(4 port)
▽:Package
01: P1(5.5x68mm)
02: P2(90x20x9.5mm)
☆ :Pigtail Length
05:0.5m
1:1m
10:10m
△:Loose Tube
B:Bare Fiber
9:900um Loose Tube
20:2mm Loose Tube
30: 2mm Loose Tube
XX: Fiber and Connector Type
SA=SMF-28E+ FC/APC
SP=SMF-28E+ FC/PC
PA=PM Fiber+ FC/APC
PP=PM Fiber+ FC/PC
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