Project Description

1310/1550nm Multimode Optical Isolator

Multimode optical isolators can be used in optical communication and sensor systems that use 62.5/125 micron or 50/125 micron multimode fiber. This isolator is specially designed to work at 1310nm or 1550nm wavelength.

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
Operating Wavelength nm 1310 or 1550
Band Width nm ±10 ±15
Minimum Isolation at 23℃ dB 25 35
Maximum Insertion Loss at 23℃ dB 0.8 0.9
Return Loss (In/Out) dB >35/30
PDL dB < 0.2
Maximum Power Handling(CW) W 0.3, 1, 3, 5, 10
Max. Tensile Load N 5
Fiber Type – MM 62.5/125,50/125 fiber, or other
Operating Temperature °C -20~+70
Storage Temperature °C -40 ~+85
Dimensions mm Φ5.5xL35
  1. Above specification are for device without connector, and may change without notice.
  2. IL is 0.3 dB higher and RL is 5 dB lower for each connector added.
  3. The pass optical power is 2 W only for connector added.
  4. Tested parameters may be inconsistent with different multi-mode light sources used.

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: MMISO-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 Power Handling Fiber Type Pigtails Diameter Fiber Length Connector
IS: Single stage

IU: Dual stage

 13:1310nm

14:1480nm

15:1550nm

LB:L band

 L:<0.3W 1:1W 3:3W 5:5W 50:50/125um

62:62.5/125um

XX: Others

 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: MMISO-IS-15-L-50-25-10-00

Description: 1550nm multimode single stage fiber optic isolator, 0.3W power handling, 50/125um MM fiber, 250um bare fiber, 1.0m length fiber pigtails, no 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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