This paper describes the design principles and performance of optical multi/demultiplexers
(MUX/DEMUX's) in wavelength-division multiplexing (WDM) subscriber-loop systems over a …

Speckle patterns to be observed in an output light spot from an optical fiber are known to be
changed due to external disturbances applied onto the optical fiber. In order to investigate …

Changes in speckle patterns due to certain external disturbances to be applied onto a
multimode optical fiber were observed. In the first attempt, a multimode optical glass fiber …

In order to achieve laser uniform illumination, a new laser homogenization system was
designed based on the analysis of regular homogenization technology, and the …

When coherent light beams, ie, laser beams are transmitted in an optical fiber and exit from
one end to form an output light spot on a screen, non-uniform intensity distribution called …

为了实现激光均匀照明, 在分析常规匀光技术的基础上设计了新型的激光匀光系统,
并对该系统的匀光技术及光斑均匀性进行研究. 新型的匀光系统是利用无刷电机带动光束整形 …

HDTV is expected to be the next-generation television system. This article presents major
fiber-optic technologies for HDTV transmission and concepts for an HDTV distribution …

A multivibrator circuit employing field effect transistors which operates with a high oscillation
frequency and low power consumption comprises four series connections. The first series …

A low facet reflectivity laser diode is able to oscillate in multilongitudinal modes, and has a
high relative intensity noise (RIN) and reduces mode hopping noise. By introducing the …