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Micro-structured fiber Bragg gratings: optimization of the fabrication process
Optics Express
|June 25, 2009
Summary
This study introduces a new method for fabricating micro-structured fiber Bragg gratings (MSFBGs) using UV laser micromachining and chemical etching. This technique offers precise control over geometric features, enabling advanced photonic devices.
Area of Science:
- Photonics
- Materials Science
- Optical Engineering
Background:
- Fiber Bragg gratings (FBGs) are crucial for optical sensing and communications.
- Micro-structured FBGs (MSFBGs) offer enhanced control over spectral properties.
- Localized cladding stripping is key to creating defect states in MSFBGs.
Purpose of the Study:
- To present a novel fabrication approach for MSFBGs with precise geometric control.
- To demonstrate a cost-efficient and reliable method for MSFBG prototyping.
- To explore the potential of MSFBGs in sensing and communications applications.
Main Methods:
- Localized cladding stripping using HF-based chemical etching.
- Patterning of polymeric coatings via high-resolution UV laser micromachining.
- Utilizing polymeric coatings as masks for selective chemical etching.
Main Results:
- Demonstrated enhanced control over MSFBG geometric features and spectral properties.
- Achieved reliable and cost-efficient fabrication of MSFBGs.
- Validated the use of UV laser micromachining for precise mask patterning.
Conclusions:
- The proposed fabrication method enables the reliable prototyping of advanced photonic devices.
- This approach provides high control over MSFBG fabrication for diverse applications.
- The integration of UV laser micromachining and chemical etching offers a versatile solution for MSFBG manufacturing.
