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UV-induced absorption in all-fiber frequency doublers: characterization and photobleaching

UV-induced absorption in all-fiber frequency doublers: characterization and photobleaching
UV-induced absorption in all-fiber frequency doublers: characterization and photobleaching
Periodic UV exposure of thermally poled optical fibers is usually used to produce efficient all-fiber frequency doublers based on second-order nonlinearity. To date, no data regarding UV-induced absorption in poled fibers have been reported. In this study, we measured this absorption and showed how it affects the conversion efficiency of second harmonic generation at wavelengths below ~800 nm. Color centers responsible for induced absorption in poled GeO2 -doped fibers were identified and photobleached by continuous-wave radiation at 532 nm. We demonstrated that photobleaching does not affect the value of nonlinearity but improves the conversion efficiency of all-fiber frequency doublers. The results obtained can be used to improve the efficiency of all-fiber second harmonic generation in the blue-green part of the spectrum.
induced absorption, optical fibers, photobleaching, second harmonic generation, thermal poling
0733-8724
439-442
Gladyshev, Alexey V.
f178f1b2-c3fa-4b63-96e8-b6e356218b84
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Medvedkov, Oleg I.
76f1d291-2746-4ce6-b74c-295bf21c61ef
Vasiliev, Sergey A.
e0eb9978-1998-4eab-ae70-dfe904c40dd3
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Dianov, Evgeny M.
9ffd4cdc-4c35-4bfb-b67d-2335cc8ee810
Gladyshev, Alexey V.
f178f1b2-c3fa-4b63-96e8-b6e356218b84
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Medvedkov, Oleg I.
76f1d291-2746-4ce6-b74c-295bf21c61ef
Vasiliev, Sergey A.
e0eb9978-1998-4eab-ae70-dfe904c40dd3
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Dianov, Evgeny M.
9ffd4cdc-4c35-4bfb-b67d-2335cc8ee810

Gladyshev, Alexey V., Corbari, Costantino, Medvedkov, Oleg I., Vasiliev, Sergey A., Kazansky, Peter G. and Dianov, Evgeny M. (2015) UV-induced absorption in all-fiber frequency doublers: characterization and photobleaching. IEEE Journal of Lightwave Technology, 33 (2), 439-442. (doi:10.1109/JLT.2015.2389259).

Record type: Article

Abstract

Periodic UV exposure of thermally poled optical fibers is usually used to produce efficient all-fiber frequency doublers based on second-order nonlinearity. To date, no data regarding UV-induced absorption in poled fibers have been reported. In this study, we measured this absorption and showed how it affects the conversion efficiency of second harmonic generation at wavelengths below ~800 nm. Color centers responsible for induced absorption in poled GeO2 -doped fibers were identified and photobleached by continuous-wave radiation at 532 nm. We demonstrated that photobleaching does not affect the value of nonlinearity but improves the conversion efficiency of all-fiber frequency doublers. The results obtained can be used to improve the efficiency of all-fiber second harmonic generation in the blue-green part of the spectrum.

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More information

e-pub ahead of print date: 7 January 2015
Published date: 27 January 2015
Keywords: induced absorption, optical fibers, photobleaching, second harmonic generation, thermal poling
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 385540
URI: https://eprints.soton.ac.uk/id/eprint/385540
ISSN: 0733-8724
PURE UUID: 31a9fb93-ae40-455e-994a-7e3797a56f04

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Date deposited: 13 Jan 2016 10:49
Last modified: 15 Jul 2019 20:52

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Contributors

Author: Alexey V. Gladyshev
Author: Costantino Corbari
Author: Oleg I. Medvedkov
Author: Sergey A. Vasiliev
Author: Evgeny M. Dianov

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