The frame structures, design principles and network planning of system based on Ethernet Passive Optical Network (EPON) are described.

描述了基于以太网的无源光网络系统的框架结构、设计原则和网络规划；

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A multi-mode optical fiber sensor system is proposed, which is installed in the window frame and whose sensor signals are based on variation of a speckle pattern.

提出一种车窗防夹的多模光纤传感系统，该系统安装在车窗框内，并基于斑纹图样的变化来获得信号。

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The particular frame of optical cross matrix composed by AWG and AOWC was used, and the wavelength route function was realized by control system.

在设计中采用了AWG和AOWC构成的光交叉矩阵的结构，并通过相应的控制系统实现了波长路由功能。

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Enthusiasts will also appreciate other thoughtful features made to appeal to more advanced photographers, such as the 100% frame coverage seen through optical viewfinder.

ENGADGET: Nikon unveils lightweight, full-frame D600 DSLR -- hands-on and low-light samples (video)

The superior telecentric optical design improves image quality throughout the frame by passing on information about subjects to the sensor.

ENGADGET: Sigma DP3 Merrill packs a Foveon X3 sensor and a fixed F2.8, 75mm-equivalent lens

Unfortunately, it sounds like both of Fujitsu's latest LifeBooks underperformed in the areas that mattered most, and as PCMag put it, shoving a full-fledged PC (with an integrated optical drive, no less) into a three- to four-pound frame requires quite a few tradeoffs.

ENGADGET: Fujitsu's LifeBook S2210 and P7230 laptops reviewed