线性反射结构中基于偏振调控宇称-时间对称的低噪声线偏振光纤激光器

Key Points

• To achieve a stable parity-time (PT) symmetry in fiber lasers, enhancing light signal quality.
• Developed a low noise linear polarized single longitudinal mode fiber laser using a linear reflection structure.
• Utilized a polarization controller, birefringent ring, and single-mode fiber Bragg grating.
• Analyses were conducted on relative intensity noise and phase noise compared to other laser types.
• The laser achieved a side mode suppression ratio of 62.6 dB and a signal-to-noise ratio of 64.32 dB.
• Maintained polarization degree and extinction ratio above 99.8% and 30.8 dB over 4 hours.
• Experimental results confirmed the theoretical expectations for low noise characteristics.