Mode-beating-enabled stopband narrowing in all-solid photonic bandgap fiber and sensing applications.
Opt Express
; 19(9): 8167-72, 2011 Apr 25.
Article
em En
| MEDLINE
| ID: mdl-21643066
ABSTRACT
In this paper, core-cladding modal beating in a short piece of all-solid photonic bandgap fiber (AS-PBF) is observed in longitudinal propagation direction. It is demonstrated that at the stopband range of AS-PBF, the power could transfer back and forth between the fiber core and the first layer of high-index rods. Both experimental results and the theoretical analysis from transverse coupled mode theory confirm that the 3-dB width of the sharp stopband could be significantly narrowed by multicycles of such core-cladding modal couplings, which is of great benefit to the high-resolution sensing applications. Based on such a guiding regime, a high-temperature sensor head is also made and its response to temperature is tested to be of 59.9 pm/°C.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Refratometria
/
Transdutores
/
Tecnologia de Fibra Óptica
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
China