About: Long-period gratings inscribed in photonic crystal fiber by symmetric CO2 laser irradiation

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Description	Long-period gratings (LPGs) inscribed in endlessly single mode (ESM) photonic crystal fibers (PCFs) with symmetric and asymmetric CO2 laser irradiation are investigated both numerically and experimentally. Parallel results from conventional single mode fibers (SMFs) are presented for comparison. Theoretical predictions, transmission measurements, and near-field imaging indicate that, regardless of the fiber type, symmetric index perturbation induced by laser irradiation with the aid of a 120 degrees goldcoated reflecting mirror results in LP0n symmetric mode coupling, while asymmetric irradiation without using the mirror leads to LP1n asymmetric mode coupling. Our results show that, because of the azimuthally anisotropic hexagonal cladding structure, symmetric irradiation yields far more reproducible LPGs in PCFs than asymmetric irradiation. On the other hand, the irradiation symmetry has little effect on the reproducibility of LPGs inscribed in SMFs due to the isotropy of its all-solid cladding structure Long-period gratings (LPGs) inscribed in endlessly single mode (ESM) photonic crystal fibers (PCFs) with symmetric and asymmetric CO2 laser irradiation are investigated both numerically and experimentally. Parallel results from conventional single mode fibers (SMFs) are presented for comparison. Theoretical predictions, transmission measurements, and near-field imaging indicate that, regardless of the fiber type, symmetric index perturbation induced by laser irradiation with the aid of a 120 degrees goldcoated reflecting mirror results in LP0n symmetric mode coupling, while asymmetric irradiation without using the mirror leads to LP1n asymmetric mode coupling. Our results show that, because of the azimuthally anisotropic hexagonal cladding structure, symmetric irradiation yields far more reproducible LPGs in PCFs than asymmetric irradiation. On the other hand, the irradiation symmetry has little effect on the reproducibility of LPGs inscribed in SMFs due to the isotropy of its all-solid cladding structure (en)
Title	Long-period gratings inscribed in photonic crystal fiber by symmetric CO2 laser irradiation Long-period gratings inscribed in photonic crystal fiber by symmetric CO2 laser irradiation (en)
skos:prefLabel	Long-period gratings inscribed in photonic crystal fiber by symmetric CO2 laser irradiation Long-period gratings inscribed in photonic crystal fiber by symmetric CO2 laser irradiation (en)
skos:notation	RIV/67985882:_____/13:00396764!RIV14-MSM-67985882
http://linked.open...avai/predkladatel	Ústav fotoniky a elektroniky AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(LH11038)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kaňka, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fotoniky a elektroniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	85370
http://linked.open...ai/riv/idVysledku	RIV/67985882:_____/13:00396764
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	REFRACTIVE-INDEX; FABRICATION; SENSORS (en)
http://linked.open.../riv/klicoveSlovo	FABRICATION REFRACTIVE-INDEX SENSORS
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[23E97E551CF2]
http://linked.open...i/riv/nazevZdroje	Optics Express
http://linked.open...in/vavai/riv/obor	JB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Chemical and biochemical sensors based on functionalized micro- and nanostructured optical waveguides
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	21
http://linked.open...iv/tvurceVysledku	Kaňka, Jiří Du, H. Tian, F. Chiang, K. S. Zou, B.
http://linked.open...ain/vavai/riv/wos	000319814900026
issn	1094-4087
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1364/OE.21.013208

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