Opt Lett. 2014 Feb 1;39(3):689-92. doi: 10.1364/OL.39.000689.
We demonstrate a fast-tuning Brillouin/erbium fiber laser (BEFL) using 4 m erbium-doped fiber (EDF) as both the Brillouin and erbium gain media. The BEFL frequency is fast tuned via modulating a piezoelectric transducer on which the EDF is coiled. Over 60 MHz frequency-tuning range is obtained at less than 5 V voltage amplitude and the tuning rates can achieve 48 kHz. This fast-tuning BEFL presents a low phase noise of -124 dB/Hz(1/2) at 1 kHz (normalized to 1 m interferometer optical path difference) with 32 kHz modulating frequency. It presents potential applications in fiber sensors and optical communications.
我们演示了一种基于掺铒光纤（EDF）的布里渊/掺铒光纤激光器（BEFL）的快速调谐方法，该 EDF 同时作为布里渊和掺铒增益介质。通过在缠绕 EDF 的压电换能器上施加电压，实现了 BEFL 频率的快速调谐。在小于 5 V 的电压幅度下，获得了超过 60 MHz 的调谐范围，调谐速率可达 48 kHz。在 32 kHz 的调制频率下，该快速调谐的 BEFL 在 1 kHz 时的相位噪声低至-124 dB/Hz(1/2)（归一化为 1 m 干涉仪光程差）。它在光纤传感器和光通信中有潜在的应用。
