Chirp grating

In this paper, strain measuring system based on chirped gratings and edge linear filtering demodulation technology is presented.

　介绍一种采用啁啾光栅并结合边缘线性滤波解调的FBG应变测量系统。

A new method to tune a fiber Bragg grating to a chirped grating using a gradient curvature beam is proposed.

　提出了一种新颖的利用梯度曲率梁将光纤光栅调制成啁啾光栅的方法,给出了设计方法,并从理论上进行了分析。

With approximated method, the first order diffraction effciency diffraction of waveguide chirped grating was caculated in theory in this paper.

采用近似方法 ,对于光漂白形成的平面波导啁啾光栅 ,计算了一级衍射光的衍射效率 ,在实验上用光漂白方法制备出 PMMA/ DR1平面波导啁啾光栅 ,测量了光栅一级衍射光的衍射效率 。

A linear chirped fiber grating (LCFG) was used as wavelength selector and to produce temporal-spectral multiplexing of the pulses in the gain medium to reduce cross-saturation effects.

提出一种用法布里珀罗腔半导体激光器 (F PLD)作调制器 ,用线性啁啾光栅 (LCFG)进行波长选择的双波长环形腔主动锁模光纤激光器。

A new multiwavelength chirped fiber Bragg grating (MCFBG), with ITU T standard wavelength and space of neighbored wavelength was fabricated.

研制了一种多波长啁啾光纤布拉格 (Bragg)光栅 ,波长、波长间隔符合ITU T标准 ,利用这种多波长啁啾光栅可以同时对多信道波长进行色散补偿 ,光栅的每个波长补偿范围满足ITU T对应信道波长波动的要求 ,并进行了 4× 10Gb/s、4 12km波分复用色散补偿实验 ,实验结果比色散补偿光纤模块要好 ,无误码功率代价都小于 2dB。

A new multiwavelength chirped fiber Bragg grating(MCFBG), which wavelength and space of neighbored wavelength are up to ITU T standard, was fabricated.

研制了一种啁啾的多波长光纤Bragg光栅 ,波长、波长间隔符合ITU T标准 ,利用这种多波长啁啾光栅可以同时对多信道波长进行色散补偿 ,这种啁啾的多波长光纤Bragg光栅能滤除反射峰之间未用波长范围内的放大器的自发辐射噪声 (ASE) ,并进行了 8× 10Gb/s 10 2km色散补偿实验 ,各信道补偿一致性很好。

The theory of fiber Bragg grating(FBG) used in OTTD is analyzed,especially on uniform fiber bragg grating and linear chirped fiber Bragg grating.

分析了应用于光实时延时技术中的光纤光栅的原理,着重讨论了均匀光纤光栅和线性啁啾光栅,分别给出了基于两种光纤光栅的光实时延时的技术方案,在此基础上,讨论了受控于应变和温度的光纤光栅在光实时延时技术中的应用。