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Single-mode SOA-based 1kHz-linewidth dual-wavelength random fiber laser
Optics Express
|August 10, 2017
Summary
This study introduces a novel dual-wavelength random fiber laser using semiconductor optical amplifier (SOA) gain. It achieves stable, narrow-linewidth, single-mode operation, suppressing noise for advanced applications.
Area of Science:
- Photonics and Laser Technology
- Optical Engineering
Background:
- Multi-wavelength fiber lasers are crucial for applications like sensing and communications.
- Instability and mode competition are common challenges in multi-wavelength laser systems.
Purpose of the Study:
- To develop a novel narrow-linewidth dual-wavelength random fiber laser.
- To achieve stable single-mode operation using semiconductor optical amplifier (SOA) gain.
- To investigate and suppress laser noises.
Main Methods:
- Utilized a semiconductor optical amplifier (SOA) for gain.
- Employed a 5km non-uniform fiber for enhanced random distributed feedback.
- Developed a simplified theoretical model for characterization.
Main Results:
- Achieved narrow-linewidth (~1kHz) dual-wavelength single-mode operation.
- Demonstrated suppressed mode competition and enhanced laser stability.
- Investigated and confirmed improvements in suppressed intensity and frequency noises.
Conclusions:
- The novel SOA-based dual-wavelength random fiber laser offers stable, narrow-linewidth, single-mode operation.
- Inhomogeneous gain in SOA effectively mitigates mode competition and instability.
- The proposed laser shows significant potential for various optical applications.
