論文ID: 22.20250598
This study proposes a dynamic guided spontaneous-emission circuit (DGSEC) technique that achieves significantly enhanced signal-to-noise ratios (SNRs) for optical power variation measurement. The output power (Pout), time constant (τ), slope (S), and SNR enhancement factor (ΔSNR) of the DGSEC are experimentally investigated and clarified for the first time. Experimental results confirm that an increase in Pout leads to a decrease in τ (advantage) and decreases in S and ΔSNR (drawbacks), thereby establishing trade-off relationships among the four parameters. A remote sensing experiment over a 15-km single-mode fiber demonstrates successful operation of an optimized DGSEC with a ΔSNR of approximately 22.5 dB.
