Polarization Maintaining Optical Circulator

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SunmaFibers Polarization-Maintaining (PM) Optic Circulators are non-reciprocating, unidirectional, three-port devices that are used in a wide range of optical setups. Available with a center wavelength of 1064, 1310 (O-Band), or 1550 nm (C-Band), these circulators are designed to work with light tha

Specifications：

1X2 1064nm Polarization Maintaining Optical Circulator 1M

Characteristics

Low Back Reflection
High Extinction Ratio
Low Insertion Loss
High Return Loss
Excellent environmental stability and reliability

Applications
DWDM system
Add-Drop Multiplexing
Fiber Amplifier
Fiber Sensor
Chromatic Dispersion Compensation Devices
Fiber Bragg Grating

Polarization maintaining optical system

Application Diagram

Below are Three Port Circulator application for your reference.

	As the picture shows: The input DWDM channels are coupled into Port 1 of the device with a FBG device connected to Port 2. The single wavelength reflected from the FBG then reenters the Circulator in Port 2 and is routed accordingly to Port 3. The remaining signals pass through the FBG and exit on the top fiber.
Circulator used to drop an optical channel from a DWDM system using a Fiber Bragg Grating.

	As the picture shows: A Circulator is located at both ends of the fiber. Each Circulator functions to add a signal in one direction while removing the signal in the other. See the example to the left.
Circulator can be used to send optical signals through a single fiber in two directions.

Dimension

Order Information

PMCIR

Product Description

Port Type

Stage

Operating
Wavelength

Pigtail Type

Fiber Type

Connector Type

Fiber Length

P=Polarization
M=Maintaining
CIR=Circulator

1X2
2X2

Dual
Single

1064nm
1310nm
1550nm

250um
900um

PM98
PM15
PM13
others

None
FC/UFC
FC/APC
SC/UPC
SC/APC

0.5m
0.8m
1.0m
1.2m

Custom

Note:
1. Operating Wavelength: SunmaFiber can customize any other wavelengths according to your requirement.
2. Length: The default length for the cable is 1M, SunmaFiber could also provide 0.5M,0.8M,1.5M, 2.0M, etc.
3. Connector: Each port of the Circulator could be with any connector such as FC/LC/SC/ST,etc. Please contact us by email to This email address is being protected from spambots. You need JavaScript enabled to view it. or call at +86 1 86 2786-1199 if you have any requirement for it.

Sample Picture

Parameter	Unit	Value
Type	-	Type A	Type B
Center Wavelength	nm	1310& 1550	1310 &1550	1064
Operating Wavelength Range	nm	±30	±20	±5
Typ.Peak Isolation 23℃	dB	46	30	30
Min.Isolation at 23℃	dB	40	20	25
Typ.Insertion Loss at 23℃	dB	0.7	0.6	1.8
Max.Insertion Loss at 23℃	dB	0.9	0.8	2.1
Min.Extinction Ratio	dB	22	20	20
Min.Cross Talk	dB	50
Min.Return Loss	dB	50
Max.Optical Power(CW)	mW	300
Max.Tensile Load	N	5
Fiber Type	-	PM Panda Fiber
Operating Temperature	℃	-5~+70
Storage Temperature	℃	-40~+85
For device with connector, IL is 0.3dB higher, RL is 5dB lower, ER is 2dB lower;
The default connector key is aligned to slow axis;

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