Xiong Lingyun, Hofmann Peter, Schülzgen Axel, Peyghambarian N, Albert Jacques
Appl Opt. 2014 Jun 20;53(18):3848-53. doi: 10.1364/AO.53.003848.
We propose and demonstrate a 5-cm-long monolithic dual-wavelength single-longitudinal mode distributed Bragg reflector (DBR) all-phosphate fiber laser. Strong UV-induced fiber Bragg gratings are directly written in highly Er/Yb codoped phosphate fiber. The separation between gratings is selected as 1 cm to only excite two longitudinal modes in the DBR cavity. By exploiting the spatial hole burning effect and the polarization hole burning effect, stable narrow-linewidth dual-wavelength lasing emission with 38 pm wavelength spacing and a total emitted power of 2.8 mW is obtained from this DBR fiber laser. A microwave signal at 4.58 GHz is generated by the heterodyne detection of the dual-wavelength laser.
我们提出并展示了一种5厘米长的单片双波长单纵模分布布拉格反射器（DBR）全磷酸盐光纤激光器。强紫外诱导光纤布拉格光栅直接写入高度掺铒/镱的磷酸盐光纤中。光栅之间的间距选为1厘米，以便仅在DBR腔内激发两个纵模。通过利用空间烧孔效应和偏振烧孔效应，从该DBR光纤激光器获得了波长间距为38皮米、总发射功率为2.8毫瓦的稳定窄线宽双波长激光发射。通过对双波长激光进行外差检测，产生了4.58吉赫兹的微波信号。
