吉林省長(zhǎng)春市博盛量子科技有限公司

檢測(cè)通 >> 吉林省長(zhǎng)春市博盛量子科技有限公司

首頁(yè)

公司簡(jiǎn)介

光譜系統(tǒng) 光纖光損耗光譜測(cè)量系統(tǒng)

這真不是您需要的產(chǎn)品？
品　　牌：

直接提問(wèn) | 回首頁(yè)搜
出廠價(jià)：
0

主要規(guī)格：
博盛量子科技

用　　途：
博盛量子科技

光電測(cè)量產(chǎn)品 >> 光譜系統(tǒng) >> 光纖光損耗光譜測(cè)量系統(tǒng)　The Bentham Fibre Spectral Loss System is a modular system consisting of chopped light source, monochromator, launch optics, detector and lock-in amplifier. The whole system is controlled by a PC which also calculates loss in dB/km as a function of wavelength.Spectrol Loss in fibres is usually measured by the cut-back method. Modulated while light is passed through a monochromator before being launched into one end of the fibre under test. The light emitted from the other end of the dibre is collected by a large area indium gallium arsenide or silicon detector and the resulting signla amplfied by a lock-in amplfier. The detector end of the fibre is then cut back by a known length and the cleaved end reinserted in the detector assembly. The spectral loss of the fibre is calculated from the two stored curves as follows:Spectral Loss (dB/km) = log10 (short/long)/cutbackThe prime system requirements are:light throughput of the monochromatorstability of light outputmechanical stabilityThe final signal-to-noise ratio and hence speed and accuracy of measurement is dominated by the level of light reaching the detector. In all real systems this light level is limited by the efficiency and light throughput of the monochromator.When comparing various commercially available monochromators you find that most have an f number in the region of 4. It is a common misconception to assume that light throughput can be assessed by comparing f number alone. This is not the case. For a given spectral bandwidth, a large f/4 monochromator (long focal length, large mirrors and gratings) will operate with wider slits than a small f/4 unit. This wider slit allows more power through and into the fibre.The Bentham system uses a 300mm focal length, f/4 monochromator to launch 5nW or -53dBm (cw) into a single mode fibre (1300nm, 10nm bandwidth).StabilityDue to the sequential nature of the measurement, both optical and mechanical stability over the period of the two spectral runs is of critical importance.For the Bentham range, optical stability is ensured by the IL1 light source, which uses a 100W QH lamp controlled by a highly stabilised constant current power supply. This power supply is at least 10 times more stable than a normal laboratory stabilised supply.Mechanical instability in such systems results in short or long term wander of the focussed spot over the end of the fibre at the launch end. In the Bentham system the light source and launch optics are bolted firmly to the monochromator, which is constructed from a single rigid casting.

吉林省長(zhǎng)春市博盛量子科技有限公司

王佳宜

[聯(lián)系時(shí)請(qǐng)說(shuō)明來(lái)自檢測(cè)通]

在線客服：
留言咨詢

聯(lián)系方式：
請(qǐng)點(diǎn)擊查看電話

郵件：
發(fā)送郵件

地址：
地址：長(zhǎng)春市高新開(kāi)發(fā)區(qū)硅谷大街1198號(hào)

色婷婷无码人妻精品一区二区蜜桃,午夜精品久久久久久久无码软件,超碰在线无码中文字幕精品,成人伊人亚洲综合久久网

吉林省長(zhǎng)春市博盛量子科技有限公司

熱門(mén)推薦

光譜系統(tǒng) 光纖光損耗光譜測(cè)量系統(tǒng)

推薦產(chǎn)品