波长计

And, to get correct wavelength data, Burleigh WA-4500 wavelength meter was used. With the efforts on hardware connection and software programming, the data was transported from WA-4500 to the main control computer through RS232 serial communication.

为了得到激光波长的准确数据，本文使用了Buileigh公司的WA-4500波长计，并利用RS232串口把其波长数据传输到主控计算机，完成了串口硬件连接和通信软件编制。

Germany APE provides WaveScan wavelength meter is a compact, easy to use, economical scanning grating spectrometer.

德国 APE公司提供WaveScan 波长计是一款结构紧凑、使用方便、经济实用的扫描光栅光谱仪。

To provide optical fiber: Fiber Distributed Temperature Stress Test System, Fiber Distributed Temperature Measurement System, Fiber Bragg Grating Health Monitoring System, fiber optic geophone systems, fiber Bragg grating wavelength calibration instrument and so on, which sensor product line is extremely rich and has industry representation, including: fiber optic temperature hygrometer, fiber-optic gas alarm, fiber-optic magnetic field sensors, optical fiber vibration sensor, fiber-optic high temperature pressure sensors, fiber-optic WIM system , fiber optic strain gauge welding, fiber optic embedded strain gauge, optical soil pressure gauge, fiber reinforcement meter, fiber optic pressure ring, fiber-optic displacement meter, fiber cracks meter, fiber optic osmometer, fiber-optic temperature sensor high temperature , optical fiber cable meter and so on.

北京达卡科技有限公司光纤方面提供：光纤分布式应力温度测试系统、光纤分布式温度测试系统、光纤光栅健康监测系统、光纤地震检波系统、光纤光栅波长校验仪等，其中传感器产品线极为丰富和具有行业代表性，包括：光纤温湿度计、光纤瓦斯报警器、光纤磁场传感器、光纤振动传感器、光纤耐高温高压传感器、光纤动态称重系统、光纤焊接式应变计、光纤埋入式应变计、光纤土压力计、光纤钢筋计、光纤压力环、光纤位移计、光纤裂缝计、光纤渗压计、光纤耐高温温度传感器、光纤钢索计等。

In this paper, a method of optimal parameter selection for determining two operating wavelengths and their bandwidths of a high precision noncontact dual wavelength fiber optic pyrometer is proposed.

对实用化的高精度非接触式双波长光纤高温计的工作波长及其带宽进行了最优化设计，获得了良好的效果。

M and its accuracy is experimentally proved to be better ±50MHz. Based on the multiple VETs'principle, we also designed a novel compact wavemeter constructed by a triple VETs.

二、为实现对钛宝石激光器的自动扫描控制，研制了和钛宝石激光器，波长计，计算机联接的接口电路，编制了相应的控制软件。

The absorption wavemeter investigated consists of a single loop with a variable gap which is formed by a pair of parallel plates.

所研究之吸收式波长计之构造，系一黄铜制成之单圈，用二黄铜片制成之一缝隙。

A new wavemeter with cathode-ray for decimeter and centimeter waves is proposed, utilizing special deflections of cathode ray in a rapidly alternating field. When the wavelength of the deflecting field is short enough, the deflections can be made to have maximum and zero sensitivities or phase-shifts by adjusting the anode voltage.

著者新拟一量数分米或数厘米电波之波长计其法用阴极射线在极短波长之电场内之特殊偏侧在相当情形下，可由调节其阳极之电压，而使其偏侧之灵敏度或相差成极大或成零。

I.! y P,{7 v: R; O0 D INTRODUCTIONIn most of the previous studies like [1-3], the effect of SRS in DWDM fiber opticsystems has been treated under various assumptions like undepleted pump approximation, wavelength independent fiber loss coefficient, triangular approximation of Raman gainprofile, negligible loss of energy whenever a short wavelength photon is transformed into a long wavelength photon (i.e., l i / l k ~ 1), equal power loading in all the wavelength channels and equal channel spacing.

P _ W/ I 在以往的绝大多数研究中，如[1-3]，人们都认为， SRS 在 DWDM 光纤系统中的影响是在诸多假设，如未衰减泵近似值，波长依赖光纤损耗系数，喇曼增益表的三角近似值，当短波光子被转变为长波光子时(i.e。， l i / l k ~ 1可忽略不计的能量损耗，各波长通道均等的动力负载以及均等的信道的频率间隔。

At first, we proposed the principle of measuring the wavelength of continuous wave tunable laser by using multiple vernier etalons.

实验证明，波长计的重复测量精度优于±50MHz，定标后绝对精度好于±200MHz，测量波段为0.4-1.1μm，适用于激光器的自动扫描控制。

Thestandard optical pyrometer of this pyrometers is the standard instrument used at thehigh temperature zone of the international practical temperation scale,But wanting to have the meas-ured temperature,the value of the effective wave length must be determined.

光学辐射高温计是高温测量中精度最高的仪器，其中的基准光学高温计是国际实用温标高温区的标准仪器，但欲得到被测温度，需确定有效波长值，本文探讨了影响有效波长的因素及其计算方法，并讨论了它对测量精度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。