Project Description

1550nm Polarization Maintaining Isolator

The 1550nm Polarization Maintaining Isolator is a two port micro-optic device built with PM panda fiber. The PM isolator features low insertion loss, high isolation, high extinction ratio and high reliability and stability. The device guides optical light in one direction and eliminates back reflection and back scattering in the reverse direction. The device can be built with bare fiber, or 900um jacket cable. The PM Panda Fiber Isolator is widely used in amplifier systems, fiber optic systems and fiber lasers.

If you do not see a standard isolator that meets your needs, we welcome the opportunity to review your desired specification and quote a custom isolator. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.DK Photonics can respond to custom requirements with short lead times.

Features Applications
·        Low Insertion Loss

·        High Extinction Ratio

·        High isolation

·        Excellent stability and reliability

 ·        Fiber laser

·        Fiber amplifier

·        Fiber Sensor

·        Communications

Performance Specifications

Parameter Unit Single Stage Dual Stage
Grade – P A P A
Operating wavelength nm 1550
Operating Wavelength Range nm ±20 ±30
Typ. Insertion Loss at 23℃ dB 0.4 0.5 0.5 0.6
Max. Insertion loss at 23℃ dB 0.55 0.65 0.65 0.8
Typ. Peak Isolation at 23℃ dB 42 40 58 55
Min. Isolation at 23℃ dB 28 26 48 45
Extinction ratio ( Type B) dB ≥20 ≥18 ≥20 ≥18
Extinction ratio (Type F) dB ≥22 ≥20 ≥22 ≥22
Return loss (input/output) dB ≥50/50
Fiber Type – PM1550 Panda Fiber
Max. Power Handling (W) W 0.3, 1, 2, 5, 10,20
Max. Tensile Load(N) N 5
Operating temperature ℃ -5℃ ~ + 70℃
Storage temperature ℃ -40℃ ~ + 85 ℃
Dimensions mm Ф5.5× L35(<5W), 65x12x9(>5W)
“B” for Both axis working, “F” for Fast axis blocking
  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. 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: PMISO-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
Type wavelength Grade Power Handling Axis Alignment Pigtail Diameter Fiber Length Connector
S:Single stage

D:Dual stage

 13:1310nm

14:1480nm

15:1550nm

XX: Others

 P:P Grade

A:A Grade

 L:<0.3W

1:1W

2:2W

5:5W

10:10W

 B:Both axis working

F: Fast axis blocking

 25:250μm bare fiber

90:900μm Loose Fiber

XX: Others

 08:0.8m

10:1.0m

XX: Others

 00:None

FP: FC/PC

FA: FC/APC

SP: SC/PC

SA: SC/APC

LP: LC/PC

LA: LC/APC

XX: Others

Part Number Example: PMISO-D-15-P-L-B-90-10-FA

Description: 1550nm Polarization Maintaining Dual stage Isolator – 300mW, P grade, both axis working, 1.0m Fiber length with 0.9mm OD loose tube, 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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Request a quote

Please provide the following information so that we may process your quote quickly, Please let us know more about your inquiry. If you do not give us any information, we will think that you are not serious, and you might not get a reply from us.