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ASE SHIELD – ASE Suppression Filter

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Superior ASE Suppression for High-Power Fiber Lasers: TeraXion’s ASE Shield filters utilize exclusive tilted FBG technology to guide unwanted ASE into the fiber cladding, preventing its amplification and allowing lasing or amplifying wavelengths far from the maximum gain of the active fiber used. 

The ASE Shield by TeraXion is a groundbreaking solution for high-power fiber lasers and amplifiers, addressing the critical issue of Amplified Spontaneous Emission (ASE). ASE can significantly limit output power, especially when the lasing or amplifying wavelength is far from the active fiber's maximum gain. By effectively suppressing ASE at its source, the ASE Shield enables fiber laser manufacturers to dramatically increase output power, stability, and overall system robustness. 

At the heart of the ASE Shield lies TeraXion's exclusive chirped tilted Fiber Bragg Grating (CTFBG) technology. This innovative approach not only effectively suppresses ASE but also safeguards systems against parasitic lasing and unwanted signal interference. The result is a cutting-edge component that enhances the performance and reliability of high-power fiber lasers and amplifiers, pushing the boundaries of what's possible in laser technology. 

With the ASE Shield, manufacturers can overcome traditional power limitations, opening new possibilities for applications requiring high-power, stable laser output. 

To learn more about “All-fiber ASE filters for the design of high-power fiber lasers and amplifiers”, download our application note

Applications: 

  • Spectral Combining
  • Telecommunications 
  • Satellite Communication 
  • Scientific 
  • Material Processing
  • Infrared Countermeasures 
  • Directed Energy
  • Laser Surgery
  • Astronomy

Top 5 Features

Power Handling

Power Handling

With its all-fiber design, the ASF can reliably operate at power largely exceeding alternative solutions.  

Robust

Low Insertion Loss

Low insertion losses for highly efficient filtering without compromise.

Cost-Effective

Value

With its all-fiber design and low insertion losses, the ASF offer lower costs and considerably simplifies system design.

Reliable

The ASE Shield, engineered to outlast fiber lasers, exemplifies TeraXion's proven expertise, with thousands of FBG units successfully deployed over the past decade.

partnership

Partnership

TeraXion will work through the entire product development process, from prototyping to mass production. 

Critical technical specifications

Label Value

Stopband attenuation loss

≥20 dB

Stopband bandwidth

5-40 nm

Stopband center wavelength

700-1800 nm

Passband and Stopband separation (transition zone)

≥5 nm

Insertion Loss

≤0.15 dB

Download Specsheet

Specsheet PDF ASE Shield

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