High Power Isolator

Neptec’s high power optical fiber isolators permit light to transmit only in one direction. Isolators are used to protect sensitive optical components from unwanted feedback and signals within an optical fiber system. Without isolators, sensitive equipment like optical cavities could easily be damaged by reflection signals.

Neptec offers a wide range of customization options including power handling, polarization-dependent and polarization-independent models for wavelengths from 780 to 1550nm. If the high power optical fiber isolator below does not fit your application, we would be glad to review your specifications and quote a custom isolator for you.

Product Information

Key Features

• High Isolation
• Low Insertion Loss
• Low Polarization Dependent Loss (PDL)
• High Power Handling
• Excellent environmental stability and reliability
• Customized Configurations For Any Application


• Fiber Laser system



Parameter Unit Typical Notes
Operating Signal Wavelength nm 1310 or 1550 ±15
Minimum Isolation dB 46
Insertion Loss dB ≤0.60
Polarization Dependent Loss dB ≤0.15 NON PM FIBER
Return Loss dB 55 (in/out)
Power Handling W 5 to 10

Electrical and Environmental Characteristics

Parameter Unit Typical Notes
Operating Temperature Range °C 0 to 70
Storage Temperature Range °C (-40) to 80