Project Description

1550nm Polarization Insensitive Isolator

1550nm Polarization Insensitive Isolator utilizes faraday effect of Magneto optical crystal. It guides optical light in one direction and eliminates back reflection and back scattering in the reverse direction at any polarization sate. The unique manufacturing process and optical path epoxy-free design enhance the device’s high power handling capability. The devices are characterized with low insertion loss, high isolation, high return loss, excellent environmental stability and reliability and low cost. It has been widely used in EDFAs, Raman amplifiers, DWDM systems, Fiber lasers, transmitters and other fiber optic communication equipments to suppress back reflection and back scattering.

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.

Features Applications
·         Low insertion loss

·         High isolation

·         Optical path epoxy free

·         Low PDL & PMD

·         High Reliability

·         Excellent Temperature Stability

 ·         DWDM/CWDM

·         EDFA

·         Raman Amplifiers

·         Fiber Lasers

·         Transmitters

Performance Specifications

Parameter Unit Single Stage  Dual Stage
Grade – P A P A
Operating Wavelength nm 1550
Band Width nm ±15 ±30
Typical Peak Isolation (23°C) dB 42 40 52 50
Minimum Isolation (23°C) dB 32 30 46 45
Typical Insertion Loss dB 0.3 0.4 0.4 0.5
Maximum Insertion Loss dB 0.5 0.7 0.6 0.8
Return Loss (In/Out) dB >65/60 >60/55 >65/60 >60/55
PDL dB < 0.05 < 0.1 < 0.05 < 0.1
PMD ps 0.2(0.05 available upon request, only for low power)
Maximum Power Handling(CW) W 0.3, 1, 3, 5, 10
Max. Tensile Load N 5
Fiber Type – SMF-28 fiber, or other
Operating Temperature °C -20~+70
Storage Temperature °C -40 ~+85
Dimensions mm Φ5.5xL35, 65x12x9
  1. Above specifications are for device without connector.
  2. For devices with connectors, IL will be 0.3dB higher, RL will be 5dB 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. For high power applications, we will use heat sink package, contact DK Photonics for details. Please contact DK Photonics for confirmation.

Order information   P/N: ISO-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
Type Wavelength Grade Power Handling Pigtails Diameter Fiber Length Connector
IS: single stage

IU: Dual stage

 15:1550nm

LB: L band

 P:P Grade

A: A Grade

 L:<0.3W

1:1W

3:3W

5:5W

 25:250μm bare fiber

90:900μm Loose Fiber

XX: Others

 05:0.5m

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: ISO-IS-15-P-L-90-10-FA

Description: 1550nm single stage fiber optic isolator, P grade, 0.3W power handling, with 0.9mm OD loose tube,1.0m length fiber pigtails, 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

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