A particular spectrum line corresponds to a certain definite light wavelength . 某特定的譜線就代表一個確定光的波長。
In other words , light with shorter wavelength or bluer , wavelength of blue light is 450 nm is more likely to be scattered than red light wavelength 600 nm 換句話說,藍光波長較短,約450納米比紅光波長較長,約600納米更易被散射。
The relationships between the number of diffraction order and grating pitch , refractive index of medium , light wavelength , incidence angle and azimuth angle are investigated 討論了入射角、入射方位角、入射光波長、光柵柵距、介質折射率與矩形光柵衍射級次數目間的關系。
Explains this fiber - optic transmission technique that employs light wavelengths to transmit data parallel by bit or serial by character , designed to satisfy the needs of ever - increasing bandwidths 介紹了dwdm ,這是一種光纖傳送技術,采用光波來并行傳輸數據位或串行傳輸字符,設計用于滿足日益增長的帶寬要求。
In this dissertation , the boa device with high extinction - ration , low drive - voltage , high - speed switch and insensitive to wide range of light wavelength , has been developed on double - heterostructure gaas / gaaias 本研究就是在gaas gaalas雙異質結材料上設計高消光比,低驅動電壓,高速度,較寬范圍工作波長不敏感的高性能boa光開關。
It showed that the porous film had higher transmittance in infrared wavelength region , and the film with metal micro - particles had an optical adsorbing characteristics in the visible light wavelength region 結果表明:多孔氧化鋁介質膜在紅外波段具有良好的光透過特性,而沉積金屬微粒的多孔介質膜在可見光波范圍有特殊的光吸收特性,在近紅外光波范圍具有一定的偏光特性。
When the light wavelength permeating the f - p filter equals to the bragg reflection wavelength , there is an interrupt request signal , dsp deals with the useful information after dsp answers interruption , and then obtain the corresponding changes of the measured parameters 當透過f - p濾波器的光波長與bragg反射波長重合時,就產生中斷請求信號, dsp響應中斷后就對有用的信息進行處理,進而得到相應被測參量的變化。
The main works and contributions achieved in this dissertation are concluded as follows : 1 . based on the scalar diffraction theory , the mathematical model of optical configuration of transmissive grating interferometer is established . it indicats that moir interference fringes is affected by many parameters , such as grating pitch , light wavelength , light beam size and incidence angle , etc . the variation that the width , intensity , orientation and contrast of moir interference fringes along with every parameter is numerically analyzed 主要的研究內容和所取得的成果可歸納如下: 1 .基于標量衍射理論,建立了透射式光柵干涉儀光路的數學模型,分析了透射式光柵干涉儀的莫爾干涉條紋與光柵柵距、光柵開口比、光波波長、光斑尺寸、光束入射角等多個參數的關系。
In order to measure the characteristics of such semiconductor optical amplifier , we adopted a set of measurement system . this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components . such device presents good polarization insensitivity ( < 0 . 9db ) , wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power , the maximum fiber - to - fiber gain of 10db , lossless operation current of 50 - 75ma for different input signal light wavelength and power , large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db ) 與張瑞英博士一起,首次利用該種有源區結構制備出偏振不靈敏半導體光放大器,并在0 - 200ma注入電流范圍內獲得33nm的3db帶寬,在不同信號波長,不同信號功率0 - 200ma的注入電流范圍內,偏振相關損耗均《 0 . 9db ,在耦合差損為7db / facet的條件下,最大fiber - to - fiher增益達10db ,無損操作電流為50 - 70ma ,消光比達50db以上,而噪聲指數則低于8db ,最小可達4 . 6db 。
At first , the principle and technique employed in transmittance oxymetry is analyzed . the lambert - beer law and the difference in extinction coefficient of components in tissues relate to different light wavelength is applicable in reflectance oximetry as well as in transmittance oximetry , as both are relate to near - infrared spectroscopy 本文在深入了解透射式血氧飽和度測定原理及其方法之后,首先明確用近紅外光譜法測定組織血氧飽和度時,無論是透射式檢測手段還是反射式檢測,其依據的基本原理都是lambert - beer定律和組織中各成分對應不同波長光的吸收系數的差異。