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Surface-relief fiber Bragg gratings for sensing applications
Kevin H Smith1, Benjamin L Ipson, Tyson L Lowder
1Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah 84602, USA.
Applied Optics
|April 1, 2006
Summary
Researchers developed novel surface-relief fiber Bragg gratings (FBGs) etched onto D-shaped optical fibers. These gratings offer a promising alternative to traditional FBGs for various sensing applications, including temperature sensing.
Area of Science:
- Optoelectronics
- Optical Fiber Sensing
- Nanofabrication
Background:
- Standard fiber Bragg gratings (FBGs) are typically inscribed in the fiber core.
- Existing FBG fabrication methods can be complex and costly.
- There is a need for alternative FBG designs for specialized sensing applications.
Purpose of the Study:
- To introduce a new type of surface-relief fiber Bragg grating (FBG).
- To investigate the fabrication process of FBGs on D-shaped optical fibers.
- To evaluate the performance of these novel gratings for sensing applications, specifically temperature sensing.
Main Methods:
- D-shaped optical fibers were utilized for fabrication.
- A surface-etching technique was employed to inscribe the Bragg gratings.
- The fabricated gratings were characterized for their performance as temperature sensors.
Main Results:
- A novel FBG fabrication method on D-shaped fibers was successfully demonstrated.
- Surface-relief FBGs were successfully created in the cladding, above the fiber core.
- The performance of these gratings as temperature sensors was validated.
Conclusions:
- Surface-relief FBGs on D-shaped fibers represent a viable alternative to standard FBGs.
- This fabrication approach offers potential for new sensing modalities.
- The demonstrated temperature sensing capability highlights the practical utility of these novel gratings.
