分布反馈激光器中剩余法布里-珀罗腔模对非简并四波混频特性的影响

基于四波混频(FWM)的全光波长转换技术是未来多波长通信系统的核心技术之一。除半导体光放大器(SOA)外,半导体激光器也是进行波长变换的器件。实验研究了小频率失谐到大频率失谐下分布反馈(DFB)激光器中剩余法布里珀罗腔模对非简并四波混频(NDFWM)的影响,并对其四波混频转换效率进行了分析。结果表明:当探测光波长与法布里珀罗腔的某一谐振波长一致时,分布反馈激光器中的四波混频转换效率将得到显著的增强;当频率失谐为太赫兹时,仍可得到较高的四波混频转换效率。

Influences of Residual F-P Cavity Mode on Non-Degenerated Four-Wave Mixing in Distributed-Feedback Laser

All-optical wavelength conversion based on fourwave mixing(FWM) is one of the key technologies in future multi-wavelength telecommunication systems.Besides semiconductor optical amplifiers,semiconductor lasers are also good candidates for wavelength conversion.The influences of the residual F-P cavity mode on the non-degenerated FWM in a distributed-feedback(DFB) laser have been investigated from small to large range frequency detuning,as well as the conversion efficiency of conersion FWM.The experimental results show that the conversion efficiency of FWM can be enhanced obviously by the cavity resonance when the probe wavelength matches the F-P cavity mode;the FWM with high conversion efficiency can be achieved when the frequency detuning between the injection probe frequency and free-running frequency of DFB laser is up to terahertz.