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1)  extinction ratio degradation
消光比退化
1.
Theoretical analysis on extinction ratio degradation in XGM wavelength converter based on semiconductor optical amplifiers (SOA) is presented.
基于半导体光放大器的分段模型,利用传输矩阵计算方法,通过准确的增益谱模拟,分析了影响交叉增益型波长转换器消光比特性的因素,计算了泵浦光平均功率、探测光功率、波长转换间隔以及放大器长度与输出信号消光比退化之间的关系,运用能带填充效应的反过程引起的增益峰值波长的漂移解释了波长上转换更为严重的消光比退化
2)  chemical dissolution
化学消退
1.
It has important real meaning to do experiments of chemical dissolution on carbon-free handwriting by using kinds of common organic dissolvent,and compare the dissolution effects with dissolution characteristics to support basic study data for the inspection of chemical dissolution of carbon-freeh and writing.
采用多种常见有机溶剂对无碳复写字迹进行化学消退实验,并比较消退效果及消退特征,为化学消退无碳复写字迹的检验提供基础性研究数据,具有重要的现实意义。
3)  focal ratio degradation
焦比退化
1.
Analysis of focal ratio degradation of light-transmitting optical fiber in LAMOST;
LAMOST传光光纤的焦比退化特性分析
4)  extinction ratio
消光比
1.
Study of the attenuator for the high extinction ratio testing system;
高消光比测试系统衰减器的研究
2.
An automatic measurement system for extinction ratio in visible spectrum based on correlation detection principle;
相关检测法宽光谱消光比智能化测试系统
3.
Effect of the extinction ratio on the performance of optical duobinary transmission;
消光比对光双二进制传输性能的影响
5)  extinction rate
消光比
1.
The module can select single pulse from the CW of mode locking laser and guarantee high extinction rate(≥46 dB) and low insert loss(≤7 dB).
模块能够从锁模激光器的连续脉冲中选出一个单脉冲,并保证消光比≥46dB,插入损耗≤7dB。
2.
The direfractive gradent and the extinction rate ,the photorefraction(photodamage) threshold,the infrared transmission spectra and the photo conductivition of crystals have been measared.
本文报道高掺镁铌酸锂晶体的生长,测试了晶体的光学性能——双折射梯度和消光比、晶体的光折变阈值、红外透射光谱和光电导。
3.
It also has a high extinction rate(≥30dB) and l.
并实现输出消光比≥30 dB,插入损耗≤7 dB。
6)  extinction ratio measurement
消光比法
1.
A new checking method of the range finding capability,extinction ratio measurement without target,by which laser emission capability and reception capability can be dividually measured,is put forward.
提出了一种新型的激光测距机测距能力的检测方法———无靶板消光比法 ,它采用消光比技术将激光发射能力和激光接收能力分开进行直接测量。
补充资料:初级消光
分子式:
CAS号:

性质:又称初级消光。在晶体理想性或完整性甚高的场合,入射X射线作用于晶体后,其衍射线因遭遇原子(格)面会产生二次及多次反射。由于二次或多次反射的方向与原射线平行但位相不同从而导致衍射强度显著削弱,出现积分强度偏离正比于结构因子模值二次方的情况。这种并非起源于原子吸收的使衍射积分强度衰减的效应称作原消光。如方解石的单晶即有甚强的原消光效应。对于高理想的晶样进行液体空气淬冷等处理可使之转化为镶嵌化的晶体以削弱其原消光作用。

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