1M 4 Ports S+C+L 1460~1625nm Polarization Insensitive Optical Circulator
Fiber-Mart’s Four-port Optical Circulator is a special type of circulator that has one input (port 1), one output (port 4) and two common ports (port 2&3). The light goes through port 1 to port 2. At port 2, any incoming light is guided to port 3 as output, while all input from port 3 is guided to port 4 as output.
Compared to three-port circulator, four-port device has one additional bi-directional port. Hence, it can be used to construct more flexible or more complex optical fiber sub-systems, such as add/drop module, mux/demux module, multi-port bi-directional splitters, WDM optical router, etc.
Characteristics
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Low Back Reflection
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High Extinction Ratio
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Low Insertion Loss
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High Return Loss
Applications
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DWDM system
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Add-Drop Multiplexing
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Fiber Amplifier
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Fiber Sensor
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Chromatic Dispersion Compensation Devices
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Fiber Bragg Grating
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Polarization maintaining optical system
Application Diagram
Below are Three Port Circulator application for your reference.
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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. |
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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
Sample Picture
Order Information
wavelength |
Type |
Grade |
Pigtail Type |
Length |
Connector |
1310nm
1480nm
1550nm
1585nm
1520~1620nm |
3 Ports
4 Ports |
P Grade |
250um bare fiber
900um loose tube
3mm loose tube
2mm loose tube |
0.5m
0.8m
1.0m
1.5m
2.0m
Custom |
None
FC UPC/APC
SC UPC/APC
LC UPC/APC
ST UPC/APC
E2000 UPC/APC
MU |
Note:
1. Wavelength: Fiber-Mart can customize any other wavelengths according to your requirement.
2. Length: The default length for the cable is 1M, Fiber-Mart 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 [email protected] or call at +1-205-282-9089 if you have any requirement for it.
Type
Parameter |
3 Port |
4 Port |
Operating wavelength (nm) |
1310, 1480,1550,1585,(+/-30) |
C+L(1520~1620) |
1310,1480,1550,1585,(+/-30) |
C+L (1520~1620) |
Isolation (λc,23℃ all sop) (dB) |
≥40 |
≥40 |
≥40 |
≥40 |
Isolation (Over all λ, T, sop) (dB) |
≥35 |
≥30 |
≥35 |
≥30 |
Insertion Loss (λc,0~70℃ all sop) (dB) |
Grade P |
≤0.8 |
≤1.1 |
≤0.8 |
≤1.2 |
Grade A |
≤1.0 |
≤1.2 |
≤1.0 |
≤1.3 |
PDL (dB) |
≤0.15 |
≤0.20 |
Return loss (dB) |
≥50 |
PMD (ps) |
≤0.1 |
Directivity |
≥50 |
Power handling (mW) |
≤300 |
Fiber Type |
SMF-28e |
Operating temperature (℃) |
0 ~ +70 |
Storage temperature (℃) |
-40 ~ +85 |
Package Dimensions (mm) |
For bare fiber of 900um loose tube |
φ5.5×L50(P2) |
φ5.5×L68(P5) |
φ5.5×L64(P8) |
For 3mm cable |
L98XW14.5XH8.5(P6) |
L90XW20XH9.5(P9) |
L80xW12xH10(P7) |