High-sensitivity high-resolution refractometry with twin turn-around-point long-period gratings in a photonic crystal fiber
Result description
We present the numerical design of a turn-around-point long-period grating in a photonic crystal fiber (TAP PCF-LPG) for high-sensitivity, high-resolution refractometry of gases. High refractive-index sensitivity is achieved by operating LPGs in the vicinity of the dispersion turning point of the optimized PCF. Despite the resonant wavelength of the optimized PCF-LPG is highly sensitive to the refractive index of analytes, its large shifts could be monitored with a reduced resolution because the resonance dip in the TAP LPG transmission spectrum is broad. To provide also high refractive-index resolution, twin TAP-LPGs have been proposed to be used as 3 dB broadband mode converters in the interferometric scheme. The first LPG couples a portion of the light in the core mode to a forward propagating cladding mode and the second LPG couples the light back to the core mode. The resulting interference fringes within the envelope of LPG attenuation dip provide a means for higher resolution se
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
High-sensitivity high-resolution refractometry with twin turn-around-point long-period gratings in a photonic crystal fiber
Original language description
We present the numerical design of a turn-around-point long-period grating in a photonic crystal fiber (TAP PCF-LPG) for high-sensitivity, high-resolution refractometry of gases. High refractive-index sensitivity is achieved by operating LPGs in the vicinity of the dispersion turning point of the optimized PCF. Despite the resonant wavelength of the optimized PCF-LPG is highly sensitive to the refractive index of analytes, its large shifts could be monitored with a reduced resolution because the resonance dip in the TAP LPG transmission spectrum is broad. To provide also high refractive-index resolution, twin TAP-LPGs have been proposed to be used as 3 dB broadband mode converters in the interferometric scheme. The first LPG couples a portion of the light in the core mode to a forward propagating cladding mode and the second LPG couples the light back to the core mode. The resulting interference fringes within the envelope of LPG attenuation dip provide a means for higher resolution se
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
LD11030: Modelling, design and characterization of microstructured fibers for optical sensors
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
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 II
ISBN
978-0-8194-9577-8
ISSN
0277-786X
e-ISSN
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Number of pages
9
Pages from-to
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Publisher name
SPIE-INT SOC OPTICAL ENGINEERING
Place of publication
BELLINGHAM
Event location
Prague
Event date
Apr 15, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000323548700020
Basic information
Result type
D - Article in proceedings
CEP
JA - Electronics and optoelectronics
Year of implementation
2013