Project Description

1310nm&1550nm 4-port Polarization Maintaining Optical Circulator (Fast axis blocked)

The 1310nm&1550nm 4-port Polarization Maintaining Optical Circulator (Fast axis blocked) is a compact, high performance light wave 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. It utilizes proprietary designs and metal bonding micro optics packaging. It provides low insertion loss, broad band high isolation, high extinction ratio, excellent temperature stability and optical path epoxy free. It can be used for wavelength add/drop, dispersion compensation and EDFA applications.

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 300mW to 20W, and have center operating wavelengths ranging from 850nm to 1650nm.

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
·       Low Insertion Loss

·       High Isolation

·       High Extinction Ratio

·       Low Cost

·       High Stability & Reliability

 ·       Fiber Amplifiers

·       Fiber Sensor

·       Test and Measurement

·       Coherent Detecting

Performance Specifications

Parameter Unit Values
Isolation level – Type A
Center Wavelength nm 1310 or 1550
Operating Wavelength Range nm ± 30
Min. Isolation at 23℃ dB 40
Typ. Isolation at 23℃ dB 50
Peak Isolation at 23℃ dB 55
Typ. Insertion Loss at 23℃ dB 0.8
Max. Insertion Loss at 23℃ dB 1.1
Min. Extinction Ratio at 23℃ dB 20
Min. Return Loss dB 50
Min. Cross Talk dB 50
Max. Power Handling (Total input, continuous wave) W 0.5, 1, 3, 5
Max. Tensile Load N 5
Fiber Type – PM1300 / PM1550 Panda Fiber
Operating Temperature ℃ -5 to +70
Storage Temperature ℃ -40 to +85
Package Dimensions mm Ø5.5 x L35
  1. Above specifications are for device without connector.
  2. 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. Power transmits through the connector less than 2W.
  3. The transmission optical path: Type A: 1 -> 2, 2 -> 3, 3 -> 4.
  4. For high power applications, we will use heat sink package, contact DK Photonics for details.
  5. 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-①-②-③-④-⑤-⑥-⑦-⑧

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 ⑧
Port Operating Wavelength Axis Type Power Handling Pigtails Diameter Fiber Length Connector
4:4-port 13:1310nm

15:1550nm

 F: Fast axis blocked A: Type A L:<0.5W 1:1W 3:3W 5:5W 25:250μm bare fiber

90:900μm Loose tube

XX: Others

 05:0.5m

08:0.8m

10:1.0m

15:1.5m

XX: Others

 00: None

FP: FC/PC

FA: FC/APC

SA: SC/APC

LA: LC/APC

XX: Others

Part Number Example: PMOC-4-55-F-A-L-90-08-FA

Description: 1550nm 4-port Polarization Maintaining Optical Circulator, 0.5W power, Fast axis blocked, Type A, with 0.9mm OD loose tube, 0.8m 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.

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