Analysis of optical input signal polarization influence on InP integrated photonic interrogators
PBN-AR
Instytucja
Wydział Elektroniki i Technik Informacyjnych (Politechnika Warszawska)
Książka
Tytuł książki
Book of abstracts: Optical Fibers and Their Applications 2017
Data publikacji
2017
ISBN
9781510610958
Wydawca
Bialystok University of Technology
Publikacja
Główny język publikacji
en
Tytuł rozdziału
Analysis of optical input signal polarization influence on InP integrated photonic interrogators
Rok publikacji
2017
Strony (od-do)
1-1
Numer rozdziału
Identyfikator DOI
Liczba arkuszy
0.3
Hasło encyklopedyczne
Konferencja
Indeksowana w Scopus
nie
Indeksowana w Web of Science Core Collection
tak
Liczba cytowań z Web of Science Core Collection
Nazwa konferencji (skrócona)
OFTA 2017
Nazwa konferencji
17th Conference on Optical Fibers and Their Applications
Początek konferencji
2017-01-23
Koniec konferencji
2017-01-27
Lokalizacja konferencji
Supraśl
Kraj konferencji
PL
Lista innych baz czasopism i abstraktów w których była indeksowana
Streszczenia
Język
en
Treść
Among prospective applications of photonic integrated circuits (PICs) compact interrogators for optical sensors seem to be one of the most attractive fields. Thanks to small dimensions, low weight and low power consumption such devices can be implemented as readout units for fiber Bragg gratings (FBGs) based monitoring systems for emerging applications like aerospace, wind power plants or medical diagnosis/monitoring equipment. For devices operating within the NIR part of the spectrum, two general schemes can be employed in construction of an integrated FBG interrogator: - hybrid integration of a passive photonic circuit (fabricated in the Si3N4 or SOI technology) with InP or InGaAs active components - monolithically integrated InP photonic circuit containing both active and passive components. Due to cost reasons in most of applications standard single mode fibres (SMF) are used as an input/output connections. As SMF has cylindrical, symmetric design optical signal polarization does not play substantial role in its operation. Furthermore, as SMF is non-polarization maintaining, it is considerably difficult to predict the polarization state at the output of such fibre. On the contrary, PICs are usually composed of rectangular, non-symmetric waveguides and its operation (e.g. wavelength transmission spectrum of resonant devices) is strongly affected by the polarization state of the input signal. For Si3N4 or SOI-based PICs this problem can be somehow prevented by using vertical grating couplers (VGCs) as the interfacing device between the fiber and the chip. However in the case of InP-based devices, where vertical couplers are not supported by the technological platforms, fluctuations of the polarization state of the input optical signal may constitute substantial problem. In this work we present and discuss an exemplary case of an arrayed waveguide grating (AWG) interrogator fabricated using InP technology. The analysed device is strongly polarization sensitive, which may lead to resonant wavelength misreading when used as an FBG interrogator. Potential concepts of solving the problem of the input polarization state are analysed, leading to an improved measurement system design including an optical fiber-based polarization beam splitter and a broadband light source.
Inne
System-identifier
WUT31e1714bf6094757bdd57f77f91ec7fc