Scope and application of Bi-directional EDFA for long distance optical transmissions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F63839172%3A_____%2F20%3A10133326" target="_blank" >RIV/63839172:_____/20:10133326 - isvavai.cz</a>
Result on the web
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11355/113550P/Scope-and-application-of-Bi-directional-EDFA-for-long-distance/10.1117/12.2553474.full" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11355/113550P/Scope-and-application-of-Bi-directional-EDFA-for-long-distance/10.1117/12.2553474.full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2553474" target="_blank" >10.1117/12.2553474</a>
Alternative languages
Result language
angličtina
Original language name
Scope and application of Bi-directional EDFA for long distance optical transmissions
Original language description
Erbium-Doped Fibre Amplifiers (EDFAs) caused a boom in optical communications world by allowing further possibilities of optical amplification without any O-E-O conversions, also in long haul transmission with number of channels simultaneously with other advanced transmissions (sensing, precise time and frequency transfers, etc.). EDFAs are used as a booster, inline, and pre-amplifier in an optical transmission system providing gain for signals either in C- Band or L-Band, or their edge. When the EDFA is being pumped at certain wavelength, Er ion doped in the fibre absorbs the pump light heading to an excited state. Amplification is achieved by ion de-excitation via stimulated emission and such phenomena have been used since 1980s. Generally, unidirectional solutions in fibre pairs for transmissions are preferred in telco field, as technically easier. Yet, we have large experience with the costs of leased fibres, and often bidirectional transmission in single fibre means savings for fibre leasing [1], and also often enables more than sufficient capacity in National Research and Education Network (NREN) environment. [2] And, bidirectional solutions in single fibre provide benefits for very advanced services, mostly Time and Frequency (T&F) transfers where only bidirectional transmission allows the highest precision. Single path bidirectional transmission is used in order to compensate thermal fluctuations, and provides the same length of both directions, which is crucial for T&F service. In this paper, we propagate bidirectional transmission measuring specifically over 1570nm wavelength. In our project, the tunable laser uses more efficient technique to attain an ultra-stable frequency gain rather than using ubiquitous ways in the optical network services.
Czech name
—
Czech description
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Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/EF16_013%2F0001797" target="_blank" >EF16_013/0001797: CESNET E-Infrastructure - Modernisation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES VI
ISBN
978-1-5106-3483-1
ISSN
1996-756X
e-ISSN
—
Number of pages
10
Pages from-to
1-10
Publisher name
SPIE Digital Library
Place of publication
SPIE
Event location
Online
Event date
Apr 6, 2020
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000576761300016