【摘 要】
:
We present a near-navigation-grade interferometric fiber optic gyroscope (IFOG) based on an integrated optical chip. The chip comprises a light source, a photodiode, and a 3 dB coupler within an area of 48 mm2. By interrogating with an integrat
【机 构】
:
SchoolofAutomation,BeijingInstituteofTechnology,Beijing100081,ChinaStateKeyLaboratoryofInertialTechn
【出 处】
:
ChineseOpticsLetters
论文部分内容阅读
We present a near-navigation-grade interferometric fiber optic gyroscope (IFOG) based on an integrated optical chip. The chip comprises a light source, a photodiode, and a 3 dB coupler within an area of 48 mm2. By interrogating with an integrated optical modulator and a small-diameter sensing coil, the IFOG is realized. This allows for a significant reduction in size, weight, power consumption, and cost. Preliminary performance data of a gyro prototype exhibits 0.018 deg/h bias instability.
其他文献
The natural sedimentation method combining with the isothermal heating evaporation induced self-assembly is presented to fabricate three-dimensional (3D) colloidal crystals in the curved cavity of the fiber end face. A-50 \mu m-deep cavity is etched by h
针对经典的函数映射方法存在描述符特征单一、映射矩阵约束不强的问题,构建了一种数据驱动强正则化函数映射方法,用于计算三维模型的对应关系。首先,通过前向传播将源模型和目标模型的方向直方图签名(SHOT) 特征描述符输入残差网络进行训练,获得增强的SHOT特征描述符;然后,用基于函数映射的几何约束代替标签;最后,通过反向传播优化描述符的训练过程,实现了无监督数据驱动函数映射对应关系的计算。在FAUST数据集上的实验结果表明,本方法不仅能降低函数映射网络(FMnet)中模糊对应关系矩阵和测地距离矩阵的计算量,且构
放映影片时所要考虑的限制之一是通过影片的光能量,过多的光意味着过多的热,它能将影片烧毁。据美帝斯坦福大学的汉谢(T. W. Hanoch)说,他们已研制成一种可放在银幕与影片之间的光放大器,用来免除足以烧毁影片的热量。
A burst of six pulses with an average power of 38.7 W are obtained for a pulse-burst picosecond 1064 nm laser system at 1 kHz. The six pulses have equal amplitudes and pulse spacings of 800 ps, the beam quality of the
期刊
端接光纤光栅应变传感器具有无多峰、栅区不直接受力和各点受力相等等优点,在基片式和夹持式等传感器封装中得到广泛应用。但黏接层的剪切变形会导致光纤光栅测量应变与基体结构应变不同,从而产生应变测量误差。实际使用中,需要准确获得黏接层剪切变形影响下光纤光栅应变与基体结构应变的函数关系,以提高应变的测量精度。为此,推导了线黏弹性表面黏贴式端接光纤光栅应变传递方程,建立了瞬时响应和准静态响应下光纤光栅和基体之间的平均应变传递模型。讨论分析了影响平均应变传递率的因素,给出明显优于栅区黏接式光纤光栅应变传感器的黏接层参数
To solve the rate-dependent hysteresis compensation problem in fast steering mirror (FSM) systems, an improved Prandtl-Ishlinskii (P-I) model is proposed in this paper. The proposed model is formulated by employing a linear density function into the STOP
根据三原子CO2分子的电子结构,建立了双电子一维模型,采用对称分裂算符法求解含时薛定谔方程,计算了CO2分子模型体系在800 nm波长脉冲激光激发下的高次谐波(HHG)谱。结果发现,该模型计算量适中,可很好地描述CO2分子的HHG谱性质,用于激发HHG的激光脉冲宽度对HHG谱性质影响很大,多正电中心导致HHG谱呈现干涉相消现象。
Stimulated emission can be controlled by a material molecular energy band and the intensity of a pump laser, which can provide some population inversion and promote ground electron transition, respectively. We use a metallic optofluidic resonator to enhan
用吸收光谱对染料的Langmuir-Blodgett(LB)膜的聚集体在不同条件下进行了研究.典型的染料1-methyl-1’-octadecy1-2,2’-cyaninperchlorate(MOC)LB膜聚集体的吸收峰(J带)在580nm附近,吸收为0.09.刚制备好的样品随时间而改变其吸收特性,表明聚集体的结构在2hr后才趋于稳定;测定了不同样品J带的参数;吸收峰值波长位置和峰的半宽度,以及这些参数随温度的变化.吸收随温度变化的可逆性是LB膜聚集体用作光记录介质的一个物理基础.温度超过100℃时,样
The uncertainty relation is one of the fundamental principles in quantum mechanics and plays an important role in quantum information science. We experimentally test the error-disturbance uncertainty relation (EDR) with continuous variables for Gaussian s