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A wavelength division multiplexer based on plastic surfacerelief grating applied to local area communication network 下载免费PDF全文
A plastic surface-relief grating as a wavelength division multiplexer is designed and fabricated with the conventional mould pressing technique using the transmission-type fused quartz phase grating as mask pattern and polycarbonate as basal material.The experiment results show that in an optimizing process,the plastic surface-relief grating has the highest firstorder diffraction efficiency under adequate groove depth and incident angle,and can be used as the best optical path for wavelength division multiplexing(WDM).We also establish the experiment setup for testing the WDM performance of the plastic surface-relief grating based wavelength division multiplexer.The results show that the proposed wavelength division multiplexer has the high-stability temperature characteristics,the low insertion loss of less than 5 dB,the large isolation of greater than 20 dB,the low polarization-dependent loss(PDL) of less than 0.4 dB and the relatively steep pass-band characteristics.It is a WDM device with good performance,which can be applied in short distance communication. 相似文献
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塑料表面浮雕光栅的复制及其光学特性 总被引:1,自引:0,他引:1
光栅作为一种重要的光学器件,不断小型化、商品化的发展趋势要求其制造技术应具有快速批量生产的特点.本文报道了一种以熔融石英光栅为模板,采用传统模压成型技术在光学塑料表面复制浮雕光栅的方法,实现了光栅的高效批量生产.并对复制出来的塑料浮雕光栅进行了光学特性分析.测试了不同温度下复制的塑料浮雕光栅衍射光斑图样、衍射效率和衍射级次的强度分布,重点研究了温度对复制浮雕光栅性能的影响,分析了不同温度下模板材料和光学塑料的热膨胀系数与复制光栅常数之间的关系.将批量复制出的塑料浮雕光栅和模板光栅进行实验比较,结果表明在最佳工艺参数条件下,批量复制出的塑料浮雕光栅与模板光栅相比.光栅常数偏差小于1%,衍射效率偏差小于5%,衍射特性与模板光栅基本一致. 相似文献
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