2 μm超宽带PbS量子点光纤放大器

2μm ultra-broadband PbS quantum dots fiber amplifier

为了解决目前光纤放大器增益带宽较窄且结构复杂的问题,制备了一种2μm超宽带PbS量子点光纤放大器。首先,通过有机金属法制备出平均直径约为9.2 nm的PbS量子点,并采用光沉积法将其沉积在光纤锥区表面。然后,采用泵浦光源激发涂覆在光纤锥形区域的Pb S量子点,使其在2μm波段释放出与信号光波长一样的光子,从而实现光信号的放大。测试结果表明,光纤放大器在1 900~2 100 nm波段可获得10.1 dB增益,增益带宽约为200 nm。

To address the issues of narrow gain bandwidth and complex structure in current fiber amplifiers,a 2μm ultra-wide-band PbS quantum dot fiber amplifier is fabricated.Firstly,PbS quantum dots with an average diameter of approximately 9.2 nm are synthesized through the organometrical approach and deposited on the surface of the optical fiber cone region by the optical deposition method.Subsequently,the PbS quantum dots coated in the conical region of the fiber are excited by a pumping light source to emit photons with the same wavelength as the signal light in the 2μm band,thereby achieving the amplification of the optical signal.The test results indicate that the optical fiber amplifier can attain a gain of 10.1 dB within the band of 1900~2100 nm,and the gain bandwidth is approximately 200 nm.