Stable multi-wavelength fiber lasers for temperature measurements using an optical loop mirror.

Area of Science:

• Optics and Photonics
• Fiber Laser Technology
• Laser Spectroscopy

Background:

• Multi-wavelength fiber lasers are crucial for applications requiring simultaneous measurements at different wavelengths.
• Stable laser operation is essential for precise measurements and reliable device performance.
• Fiber Bragg gratings (FBGs) are widely used for wavelength selection in fiber lasers.

Purpose of the Study:

• To propose and demonstrate two novel stable multi-wavelength fiber laser configurations.
• To investigate the impact of fiber spool length on laser stability (wavelength and power).
• To explore the application of these fiber lasers in temperature measurement.

Main Methods:

• Development of two distinct fiber laser setups utilizing an optical loop mirror and fiber ring cavities.
• Incorporation of fiber Bragg grating reflectors for precise wavelength selection.
• Systematic variation of the fiber spool length to assess its effect on laser performance.

Main Results:

• Successful demonstration of two stable multi-wavelength fiber laser configurations.
• Identification of optimal fiber spool lengths for enhanced laser stability.
• Validation of the fiber laser system's suitability for accurate temperature sensing.

Conclusions:

• The proposed fiber laser configurations offer stable multi-wavelength operation.
• Fiber spool length is a critical parameter influencing laser stability.
• These novel fiber lasers present a viable solution for temperature measurement applications.