Mamdoohi G, Sarmani A R, Abas A F, Yaacob M H, Mokhtar M, Mahdi M A
Wireless and Photonics Networks Research Center, Faculty of Engineering, Universiti Putra Malaysia 43400 UPM Serdang, Selangor, Malaysia.
Opt Express. 2013 Aug 12;21(16):18724-32. doi: 10.1364/OE.21.018724.
We demonstrate a tunable multi-wavelength Brillouin-Raman fiber laser with 20 GHz wavelength spacing. The setup is arranged in a linear cavity by employing 7.2 and 11 km dispersion compensating fibers (DCF) in addition to a 30 cm Bismuth-oxide erbium doped fiber. In this experiment, for the purpose of increasing the Stokes lines, it is necessary to optimize Raman pump power and Brillouin pump power together with its corresponding wavelengths. At the specific Brillouin pump wavelength, it is found that the longer length of 11 km DCF with optimized parameters results in larger number of Stokes combs and optical signal to noise ratios (OSNRs). In this case, a total of 195 Brillouin Stokes combs are produced across 28 nm bandwidth at Brillouin pump power of -2 dBm and Raman pump power of 1000 mW. In addition, all Brillouin Stokes signals exhibit an average OSNR of 26 dB.
我们展示了一种波长间隔为20 GHz的可调谐多波长布里渊 - 拉曼光纤激光器。该装置通过采用7.2千米和11千米的色散补偿光纤（DCF）以及一根30厘米的铋氧化物掺铒光纤布置在一个线性腔中。在本实验中，为了增加斯托克斯线，有必要同时优化拉曼泵浦功率和布里渊泵浦功率及其相应波长。在特定的布里渊泵浦波长下，发现具有优化参数的11千米较长长度的DCF会产生更多数量的斯托克斯梳和更高的光信噪比（OSNR）。在这种情况下，在布里渊泵浦功率为 -2 dBm和拉曼泵浦功率为1000 mW时，在28纳米带宽内共产生了195个布里渊斯托克斯梳。此外，所有布里渊斯托克斯信号的平均OSNR为26 dB。
