High Power Narrow Bandpass filter (BPF)

Neptec’s high power Narrow Bandpass Filters (BPF) are used to selectively transmit 1064nm wavelength light. Narrow Bandpass Filters block out unwanted noise signals in EDFAs and fiber laser systems. Without a Band Pass Filter, the laser produced will be inaccurate and experience inconsistent power delivery.

Neptec offers a wide range of customization options including power handling, fiber type, polarization maintaining (PM), and packaging. If the standard BPF below does not fit your application, we would be glad to review your specifications and quote a custom BPS for you.

Product Information

Key Features

• High Channel Isolation
• High power handling
• High Stability and Reliability
• Low Insertion Loss
• High return loss
• PM and Non-PM are available
• Customized Configurations For Any Application


  • Fiber Laser system


Parameter Unit Typical Notes
Operating Signal Wavelength nm 1000 to 1100
Center Wavelength nm 1064
Pass Bandwidth @-0.5dB nm ≥10
Stop Band Width @-25dB nm ≤25
Insertion Loss (1mW) dB ≤0.7
Insertion Loss (MAX Power) dB ≤0.9
Return Loss dB ≥50
Continuous Power Handling W 10
Pulsed Power Handling W 10,000
Operating Temperature °C 0 to 70
Storage Temperature °C (-40) to 85
Fiber Type Hi 1060 Can be customized
Dimensions mm Ø5.5× L50