The polarization maintaining optical circulator is a compact, high performance lightwave component that routes incoming signals from Port 1 to Port 2, and incoming Port 2 signals to Port 3. So fiber optic circulators act as signal routers, transmitting light from an input fiber to an output fiber, but directing light that returns along that output fiber to a third port. They perform a similar function as an isolator, protecting the input fiber from return power, but also allowing the rejected light to be employed.
DK Photonics offers a large selection of polarization insensitive or polarization maintaining 3-port/4-port optical circulator. These devices can handle powers rang from 50mW to 20W, and have center operating wavelengths ranging from 500nm to 2100nm.
If you do not see a standard Optical Circulator that meets your needs, we welcome the opportunity to review your desired specification and quote a custom circulator. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.
| Features | Applications |
| · Compact size
· High Isolation · High Extinction Ratio · Low Cost · High Stability & Reliability |
· Fiber Amplifiers
· Fiber Sensor · Test and Measurement · Coherent Detecting |
Performance Specifications
| Parameter | Unit | Values | ||
| Axis | – | Both axis working | ||
| Center Wavelength | nm | 1030 | 1064 | 1310 or 1550 |
| Operating Wavelength Range | nm | ± 5 | ± 5 | ± 20 |
| Min. Isolation at 23℃ | dB | 20 | 22 | 40 |
| Typ. Isolation at 23℃ | dB | 23 | 28 | 45 |
| Typ. Insertion Loss at 23℃ | dB | 3.5 | 1.8 | 50 |
| Max. Insertion Loss at 23℃ | dB | 3.8 | 2.2 | 0.8 |
| Min. Extinction Ratio at 23℃ | dB | 18 | 18 | 1.0 |
| Min. Return Loss | dB | 50 | 1064 | 20 |
| Min. Cross Talk | dB | 50 | ||
| Max. Power Handling(total input, continuous wave) | W | 50mW | 300mW | 0.5, 1, 3, 5 |
| Max. Tensile Load | N | 5 | ||
| Fiber Type | – | PM980 Panda Fiber | PM1300 / PM1550 Panda Fiber | |
| Operating Temperature | ℃ | -5 to +70 | ||
| Storage Temperature | ℃ | -40 to +85 | ||
| Package Dimensions | mm | (L)34×(W)8.4×(H)8.4 | Ø5.5 x L50 | |
- Above specifications are for device without connector.
- For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. The default connector key is aligned to slow axis.
- For this 1030nm Circulator, due to high IL, it is recommended to use average power of <50mW, If you need higher handle power, lower IL, please look for our 1030nm High power Circulator. For this 1064nm Circulator, due to high IL, it is recommended to use average power of <300mW, If you need higher handle power, lower IL, please look for our 1064nm High power Circulator.
- If there is pulse application, please be sure to inform us of pulse energy and peak power.
- For high power applications, we will use heat sink package, contact DK Photonics for details.
- For high-power applications, IL and ISO will be slightly worse due to the heat absorbed by the Faraday plate and the temperature rise. But they are all within a reasonable range. For more information, please contact DKP.
Package Dimension
*Due to ongoing design improvements, the package size is subject to change. Please contact DK Photonics for confirmation.
Order information P/N: PMOC-①-②-③-④-⑤-⑥-⑦
When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.
| ① | ② | ③ | ④ | ⑤ | ⑥ | ⑦ |
| Port | Operating Wavelength | Axis | Power Handling | Pigtails Diameter | Fiber Length | Connector |
| 3:3port | 30:1030nm
64:1064nm 13:1310nm 15:1550nm |
B: Both axis working | L:<0.5W
1:1W 3:3W 5:5W XX: Others |
25:250μm bare fiber
90:900μm Loose tube XX: Others |
05:0.5m
08:0.8m 10:1.0m XX:Others |
00:None
FP: FC/PC FA: FC/APC XX: Others |
Part Number Example #1: PMOC-3-03-B-0.05-25-10-00
Description: 1030nm 3-port Polarization Maintaining Optical Circulator, 50mW, both axis working, with PM980 bare fiber, 1.0m length fiber and no connector at all ports.
Part Number Example #2: PMOC-3-15-B-L-90-10-FA
Description: 1550nm 3-port Polarization Maintaining Optical Circulator, 300mW, both axis working, with 0.9mm OD loose tube, 1.0m length PM1550 fiber and FC/APC connectors at all ports.
Ordering Information for Custom Parts
If you need to customize other specifications, please provide detailed description for your requirement.
Request a quote
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