Beam Splitter, How Much Do You Know?

by Happy Great happygreat15 When it comes to the beam splitter, in fact, it is an important part of interferometer. Just as its name implies, it is equipped with the function of beam splitting and such a function is needed in many occasions. The basic working principle is quite easy to understand. When the light beam is shooting on the surface of the beam splitter whatever the angle is, in theory, 50% light will pass through the surface, while the other 50% will be reflected by the surface. As the result, the light has been split into two

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. What is more, the light can be split into several beams on the basis of special device. In order to satisfy different application fields, several different types of beam splitters have been produced, such as laser beam splitter, beam splitter mirror or optical splitter and so on. The following paragraphs will introduce some of them in details.
 
Optical beam splitter comes very first, which is widely applied to optical communication system, data transmission system, cable television, fiber to the home and optical fiber sensing system. Generally speaking, the silica glass substratum planar optical waveguide, precision optical fiber array and advanced packaging technique as well as automatic alignment will be adopted. Comparatively speaking, the optical beam splitter enjoys the superiorities of low insertion loss and polarization dependency, high channel homogeneity and compact package. There are five main subtypes, including 1*4, 1*8, 1*16, 1*32 and 2*32. More importantly, the extra optical fiber splice can be added according to the practical customer requirements.
 
Polarization beam splitter is mainly adopted by projection system and displaying system, which contains one prism at least. In the

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, the prism has more than one interarea, whose refractive index is more than 1.7. Besides, the double-refraction film is located on the interarea of the prism. In order to increase the beam splitting efficiency and accuracy, the double-refraction multilayer film has been invented in recent.
 
Polarization maintaining optical fiber beam splitter is another popular one, which enjoys excellent reputation in such fields as optical fiber current transformer, fiber fiber sensor, high-speed photo-communication system and Raman amplifier. Compared with other beam splitters, the polarization maintaining optical fiber type enjoys such unique characteristics as wide working temperature range, large working wavelength range and low loss. In general, it is fitted for lot-size production.
 
With the fast development of various measuring meters, the beam splitter, as an indispensable optical device, will be upgraded at the same step.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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