【摘 要】
:
We describe an all-optical wavelength conversion scheme for 1310 nm to 1550 nm based on nonlinear polarization rotation in a gain-transparent semiconductor optical amplifier (GT-SOA) which brings in the assistant light to improve the property of the conve
【机 构】
:
StateKeyLaboratoryofInformationPhotonicsandOpticalCommunications,BeijingUniversityofPostsandTelecomm
【出 处】
:
OptoelectronicsLetters
论文部分内容阅读
We describe an all-optical wavelength conversion scheme for 1310 nm to 1550 nm based on nonlinear polarization rotation in a gain-transparent semiconductor optical amplifier (GT-SOA) which brings in the assistant light to improve the property of the converted light. From the SOA carrier density equations, the 1310 nm-to-1550 nm wavelength conversion scheme is analyzed by the Jones matrix. The phase shift between TE and TM modes and the converted light are simulated at bit rate of 30 Gbit/s. We also analyze the influence of the input signal power, the injected current and the assistant light power on the extinction ratio of the converted light.
其他文献
基于自由空间法,设计研制了一套D波段透射率测试装置,对典型衣服、鞋底及快递包装进行了测试。该测试装置包括D波段矢量网络分析仪、高斯波束天线、双曲透镜、光学导轨以及固定夹具。采用直通反射-传输线(TRL)校准方法和时域门技术,提高了测试准确度,保证数据有效性。对10种厚薄不同的衣服进行了D波段透射率测试,测试曲线趋势与已报道文献结果吻合。对鞋底以及快递包装的透射率进行了测试,获得了与安保场景比较接近的数据,有利于安检系统的设计。
A novel optical burst switching (OBS) high speed network architecture has been proposed. To verify its feasibility and evaluate its performance, just-enough-time (JET) signaling has been considered as a high performance protocol. In the proposed architect
为解决尺度、视角、光照变化较大及存在噪声和模糊变化情况下的图像拼接问题,提出了一种具有较强鲁棒性的图像拼接方法。首先,根据Harris算法和SIFT算法各自的特点,提出了一种自适应的Harris-SIFT特征点提取方法,利用最邻近法完成图像间的特征点粗匹配;然后,应用随机抽样一致性(Random Sample Consensus,RANSAC)算法对粗匹配的特征点进行筛选,同时估计出透视变换模型的
本文从基尔霍夫衍射积分公式出发,在超出菲涅耳衍射区的近似下,给出点像振幅分布,从而应用四个傅里叶变换式,给出一个更为精确的OTF算式,它是对文献[1]~[3]工作的改进。
We report the recent improvement on the petawatt (PW) femtosecond Ti:sapphire chirped pulse amplification (CPA) laser system at Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences. By enlarging the sizes of the pump and sig
本文介绍了利用普通单模光导纤维弯曲产生的双折射效应而研制成的频率偏移装置和偏振控制装置.频率偏移装置的单边带抑制达30dB以上,它与光纤偏振控制装置一起是构成全光纤功能型传感器比较理想的光纤元件.
用时间延迟激光感生双光栅研究光路中的相位变化.实验结果表明,通过拍频信号峰值的位移,可以测量两束频率与偏振均不相同的光经过介质后相对相位的变化.
本文提出了一种消除衍射晕非均匀照度影响、提高计算机自动测量散斑摄影条纹图精度的数字图像复原算法.简单介绍了散斑摄影条纹的自动分析过程.在VAX-11/785计算机上对模拟的无噪声白光散斑条纹进行验证,结果表明,本算法和程序是可靠的.
A feasible method of combining the concept of fluorescence half-life and the power dependent photobleaching rate for characterizing the practical photostability of fluorescent proteins (FPs) was introduced. Furthermore, by using a fluorescent photostabili
研究了偶氮侧链聚合物中光致各向异性和偏振全息,确认在这种聚合物中分析光致各向异性动力学过程时,必须考虑光漂白效应的影响,测量表明该聚合物具有大的光致双折射(Δn=7.8×10-3),并在其中记录了高衍射效率(η=19.3%)的偏振全息图。