ON THE WAY TO PETA ERA
by Acad. Yevgeny DIANOV, Director of the Fiber Optics Scientific Center, RAS (Moscow) History of human civilization is also history of development of communication means. Advances in science and technology were accompanied by emergence of new information transmission methods. Suffice it to mention the invention of wire telegraph and telephone in the 19th century. But the 20th century was characterized by distribution of radio communications including satellite one. Wavelength reduction of carrier radio radiation (frequency increase) allowed transmission of more and more data volumes. But even these opportunities could not keep up with the growing requirements of society. Specialists became aware of the necessity to find a new method of communication, i.e. using optical radiation, which promised growth of information transmission rate more than 10,000 times, if compared with radio communication. The current scales of using optical communication via fiber lightguide confirmed the expectations. However this material information carrier also has its limitations. What is to be done? Let us clear it up. стр. 4 Spectrum of optical losses of fiber lightguides. O, E, S, C, L, U are designations of spectral bands used in literature. EDFA is an amplification band of erbium fiber amplifier. ALLWave and SSMF are types of fiber lightguides. All continents of our planet are connected at present by under-water fiber-optic lines. By 2010 the total extent of laid fiber lightguides including transatlantic and transpacific under-water systems reached 1 bln km. In developed countries such light-guide is now connected to each house thus providing access to wide-band information through Internet. According to the estimates the number of the global network users will reach 5 bln in 2015. By the way, this very network emerged due to the development of the fiber-optic communication. The outstanding results in creation of the said systems were achiev ... Read more
____________________

This publication was posted on Libmonster in another country. The article seemed interesting to our editor.

Full version: https://library.ee/m/articles/view/ON-THE-WAY-TO-PETA-ERA
Sweden Online · 8 days ago 0 9
Professional Authors' Comments:
Order by: 
Per page: 
 
  • There are no comments yet
Guest comments




Who Like this
Likes · Dislikes
 
Empty
Actions
Rate
0 votes
Publisher
Sweden Online
Stockholm, Sweden
20.11.2021 (8 days ago)
Link
Permanent link to this publication:

http://library.se/blogs/entry/ON-THE-WAY-TO-PETA-ERA


© library.se
 

Libmonster, International Network:

Actual publications:

Libmonster Partners

Actual publications:

Latest ARTICLES:

_libmonster_bottom_ads4

LIBRARY.SE is a Swedish open digital library, repository of author's heritage and archive

Register & start to create your original collection of articles, books, research, biographies, photographs, files. It's convenient and free. Click here to register as an author. Share with the world your works!
ON THE WAY TO PETA ERA
 

Contacts
Watch out for new publications:

About · News · For Advertisers · Donate to Libmonster

Swedish Digital Library ® All rights reserved.
2014-2021, LIBRARY.SE is a part of Libmonster, international library network (open map)
Keeping the heritage of Ukraine


LIBMONSTER NETWORK ONE WORLD - ONE LIBRARY

US-Great Britain Sweden Serbia
Russia Belarus Ukraine Kazakhstan Moldova Tajikistan Estonia Russia-2 Belarus-2

Create and store your author's collection at Libmonster: articles, books, studies. Libmonster will spread your heritage all over the world (through a network of branches, partner libraries, search engines, social networks). You will be able to share a link to your profile with colleagues, students, readers and other interested parties, in order to acquaint them with your copyright heritage. After registration at your disposal - more than 100 tools for creating your own author's collection. It is free: it was, it is and always will be.

Download app for smartphones