Scope and application of Bi-directional EDFA for long distance optical transmissions

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Scope and application of Bi-directional EDFA for long distance optical transmissions

Popis výsledku v původním jazyce

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&amp;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&amp;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.

Název v anglickém jazyce

Scope and application of Bi-directional EDFA for long distance optical transmissions

Popis výsledku anglicky

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&amp;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&amp;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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF16_013%2F0001797" target="_blank" >EF16_013/0001797: E-infrastruktura CESNET - modernizace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES VI

ISBN

978-1-5106-3483-1

ISSN

1996-756X

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

SPIE Digital Library

Místo vydání

SPIE

Místo konání akce

Online

Datum konání akce

6. 4. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000576761300016