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Modification of the optical performance of fiber bragg gratings using femtosecond laser micromachining.
| Content Provider | CiteSeerX |
|---|---|
| Author | Alemohammad, Hamidreza Toyserkani, Ehsan |
| Abstract | This paper describes the use of femtosecond laser pulses to selectively modify the optical per-formance of as-fabricated fiber Bragg gratings (FBG) written in single mode optical fibers. As a re-sult of the irradiation of FBGs by femtosecond laser pulses generated from a Ti:Sapphire amplifier, the resonance Bragg wavelength is changed, or split into two separate individual wavelengths. In addition, the bandwidth of the reflection peak is increased. Further analyses show that a change of 6.09×10-4 in the refractive index is achieved in a single pass of the laser beam. Periodic micro-grooves are also inscribed along the fiber using femtosecond pulses. In addition to the optical per-formance, the sensing performance of the FBGs is increased by inscription of periodic micro-grooves in the cladding of the fiber. The micromachined fibers are used for simultaneous measure-ment of temperature and concentration of liquids. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Optical Performance Optical Per-formance Periodic Micro-grooves Laser Beam Sapphire Amplifier Single Mode Optical Fiber Refractive Index Femtosecond Laser Resonance Bragg Wavelength Separate Individual Wavelength Reflection Peak Femtosecond Pulse As-fabricated Fiber Bragg Grating Femtosecond Laser Pulse Micromachined Fiber Simultaneous Measure-ment Single Pas |
| Content Type | Text |
| Resource Type | Article |
