Tunable laser with linewidth suppression for optical frequency standards working in telecommunication bands

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F14%3A00434227" target="_blank" >RIV/68081731:_____/14:00434227 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929046" target="_blank" >http://dx.doi.org/10.1109/URSIGASS.2014.6929046</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929046" target="_blank" >10.1109/URSIGASS.2014.6929046</a>

Result language

angličtina

Original language name

Tunable laser with linewidth suppression for optical frequency standards working in telecommunication bands

Original language description

In this work we present a laser source working in telecommunication wavelength band useful for construction of an optical frequency standard at 1540 nm. These standards are usually defined through a saturated absorption spectroscopy technique where acetylene gas is used as the absorption medium. Because the linewidth of absorption lines of acetylene are very narrow (several hundred kHz) it needs the laser with linewidth below the level of several kHz. We present a single-mode laser diode with a planar lightwave circuit (PLC) that includes a Bragg grating as the primary laser source. It has mode hop free tunable range up to 5 GHz of optical frequency at the operational wavelength 1540.577 nm. The linewidth of the laser is better than 3 kHz for short term period. But the laser absolute frequency is influenced by a flicker noise that could be suppressed. We used unbalanced Michelson fiber interferometer with 1 km long arm to suppress frequency noise of the laser. We provided the signal processing with PID servo loop with the laser current control. We suppressed the noise around the laser linewidth by −60 dB up to 33 kHz of Fourier frequency. The noise properties of the stabilized laser have promising stability for the optical frequency standard using an acetylene saturated absorption technique as a reference.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2014

Confidentiality

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

Article name in the collection

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI (Proceedings IEEE)

ISBN

978-1-4673-5225-3

ISSN

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e-ISSN

—

Number of pages

4

Pages from-to

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Publisher name

IEEE

Place of publication

Piscataway

Event location

Beijing

Event date

Aug 16, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000366628700065